Truss Rod straightens treble side only

[Southpaw5]

so i have a 93' ibanez 895TC, It’s a bit beat up due to regular use in the past but never had any major issues. I tried to give it a setup since I noticed that it didn't seem like there was enough room for the strings to vibrate and arc whe I play slap. I figured I just needed to raise up the saddles a bit but while i was sighting it out i noticed that the treble side was almost too flat, while the bass side(and this it a 5er) had HUGE relief. It almost looks as if the truss rod only straightens 1 side of the neck.The bass plays great fingerstyle now, as long as i use a light touch, but thats it. No digging in or slap Is this fixable?


thanks Y'all

[T-Bird]

Hi.

Anything's fixable to an extent, but I haven't found a cheap, solid way to fix the problem You describe. And as far as I know, no one else have either.

One solution I have found that works about 20% of the time is to free the neck completely from tension, let it sit for several weeks and then start to do the setup from the ground up.

I don't doubt Your ability to do the setup, but usually a pro can make a neck like you describe more playable. The obvious problem is the seasonal changes, and the requirements that it causes.

Regards
Sam

[James Judson]

Sounds like you need a good luthiers help. They can do wonders to wood but may be expensive. Questions you should answer: Whats the bass worth? What would a new neck cost? What would repairs cost? How much do you "love" that bass?
Armed with those answers only you can determine the best course of action.

Good luck.

JJ
YMMV