Forgot to mention, I had a problem with one neck that developed a nasty back-bow, even with heavy LaBella flats and no tension on the truss rod. It became unusable, and Warmoth replaced it with an even nicer neck. No problems since then. I think their necks are uber-strong and stable.... they make the whole thing sing. Some object to the one size fits all shape and profile. I got used to it even after using an Ibanez for several years. Great stuff.
Just to address the one-size/profile:
A month ago I ordered a new build (neck and body, not from the Showcase). Even though I already have 3 Warmoths, just for the heck of it, I decided to ask about the neck profile, seeing as the guitar necks have several etc. Much to my surprise, I was told that they are just beginning to offer a slimmer profile for bass necks - it is not on the website as yet. I was told "it would feel noticeably thinner". I asked how much, like a Geddy vs a standard for example? -No, not that drastic, but definitely a slimmer feel.- What I get is they didn't want to compromise the structural integrity, so it may be a fairly subtle thing. Still, I was up for it.
Like everything else off the beaten path there's an upcharge and this one's $35.
I won't get the neck for another 3 weeks or so but I am anxious to see what the new profile is. I do like their standard necks. Killer quality, and once settled practically never need adjustment. I haven't touched the necks I have in several years - still perfectly set up. This should be interesting!