- Joined
- Apr 17, 2006
- Messages
- 1,371
- Reaction score
- 34
I just acquired an 89 Thumb, and it is damn near impossible to adjust the truss rod. I turn it clockwise, and it loosens giving more bow. This is counter intuitive for me. It is also very, very hard to tighten counter clockwise, pretty much impossible, which is what I want because the neck has too much bow. I don't want to harm the bass, and I have no experience with truss rods from this era, so any help is appreciated.

