Fender Precision Professional II neck & truss rod weirdness

[Detriot]

I have been setting up basses and their inferior smaller siblings for 16 years and have never come across this issue.
I purchased and received a brand-new Fender Precision Professional II (dark night) and am having issues with the neck straightness. It seems either there is an issue with the neck or the truss-rod.
Doing a setup with no string tension. I had to snug up the truss-rod well beyond my comfort levels and leave the bass over night before any straightening occurred. I then tightened the strings up to tune (flat wounds standard E) and the neck sort of held straight from a back bow position, but after just a few hours the forward-bow has come back.
The truss-rod is really tight in there. Not sure how far in the travel it is, but I was already "sweating bullets" doing even the last small turn and leaving it overnight.
Is anyone else experiencing this with a Professional II Precision? My Professional I Jazz and Stringray 5 don't have this issue and even the various Squires and Epiphones I have had over the years didn't. (Though their neck relief was very shifty while traveling around the US anyways).

I have the same issue. Spanking new Precision Prof II. Truss Rod maxed out. No more adjustability. String saddles all flat. Strings still too high. Still cannot get the thing to play like my Jazz Bass. Appears I looking at a shim to correct the problem. This should not be happening in my opinion. I had the local Fender approved luthier to look a the truss rod. Says it's fine. Something is not adding up.

 

[Detriot]

I have been setting up basses and their inferior smaller siblings for 16 years and have never come across this issue.
I purchased and received a brand-new Fender Precision Professional II (dark night) and am having issues with the neck straightness. It seems either there is an issue with the neck or the truss-rod.
Doing a setup with no string tension. I had to snug up the truss-rod well beyond my comfort levels and leave the bass over night before any straightening occurred. I then tightened the strings up to tune (flat wounds standard E) and the neck sort of held straight from a back bow position, but after just a few hours the forward-bow has come back.
The truss-rod is really tight in there. Not sure how far in the travel it is, but I was already "sweating bullets" doing even the last small turn and leaving it overnight.
Is anyone else experiencing this with a Professional II Precision? My Professional I Jazz and Stringray 5 don't have this issue and even the various Squires and Epiphones I have had over the years didn't. (Though their neck relief was very shifty while traveling around the US anyways).

I also have a new Precision Prof II. Same problem with the truss rod which seems to have limited travel such that I am not able to get the string action to where I would like it. (As I can do with my Fender Jazz Bass). Have installed a .25 shim with some improvement. Action still not where I would want it. Very disappointed. Local authorized Fender Luthier who reviewed the situation says there is nothing wrong with the neck. I disagree, the truss rod should have more travel to remove relief. Truss rod is maxed tight at the moment. Not sure what to do. Might purchase a Warmoth neck. Another $200 ++. ugh !

 

[Detriot]

I have the same issue. Spanking new Precision Prof II. Truss Rod maxed out. No more adjustability. String saddles all flat. Strings still too high. Still cannot get the thing to play like my Jazz Bass. Appears I looking at a shim to correct the problem. This should not be happening in my opinion. I had the local Fender approved luthier to look a the truss rod. Says it's fine. Something is not adding up.

Update: I found I had one more, very tight small turn on the truss rod and think I got the action about where I like it. Once again, it appears to be maxed out. Now, what happens when there is a humidity change and I need a small adjustment to remove relief. ? Who knows. It appears the .025 shim worked, for now.

 

[basseux]

I had that issue with an American Pro 2 fretless jazzbass, were it appeared that the trussrod was maxed out, but I sorted the issue by using an angled wrench instead of the T wrench.

It might sound like the highway to disaster, but it's like the trussrod they use on this models is stiffer than what I was used to on my 2012 american standard jazz and precision, and more like what I had on other basses where i always used and angled wrench because trussrod nut is at the head of the neck.

Even with the neck removed of the body, the T wrench made me feel like I was at the max of the muscular force I was willing to put on the wrench to turn the trussrod, and started to believe there was a trussrod problem.
Then I decided to give it a shot with an angled wrench, thinking that having more torque would allow me to use less muscle force and help me sense better if I was really at the max of the trussrod.

So I gently turned the angled wrench without any excessive force at all, and the trussrod finally turned as expected without the unusual resistance I felt with the T wrench, allowing me to get the relief I wanted.

I created a thread here where I blame the T wrench https://www.talkbass.com/threads/fender-t-wrench-is-a-bad-tool.1667076/
There has to be some sort of rational explanation to what 3 of us here are experiencing on this american pro 2 basses.