My bass's action is quite high (to the point where the higher frets, in particular, are difficult to play), but when I lower the saddles, frets past the 12th start to buzz. After reading the Gary Willis setup guide, I concluded that I needed to tighten the truss rod. However, I'm having trouble with this part of the process:
http://garywillis.com/pages/bass/bas...trussrod3.html
I've tried doing that, but I'm not sure how much pressure I need to put on it when turning it (don't want to break the neck!), and it's a quite awkard position (my bass's physical shape doesn't seem to lend itself to that technique very well). Any advice?