I have a Precision (Roger Waters Model) I purchased used. It plays nice enough, but I cannot get the neck to relax to "flat" position. I know I had read a post or two about this in the past, but could not locate them. I had also seen a Dan Erlewine video addressing this issue - but could not locate that either. Is this something I can address easily with a clamp and a couple of blocks of wood? For some reason - I recall that and the term "Helping" the truss rod. It isn't a tremendous problem, but the relief with the truss rod loosened is slightly more than I like. Thanks for any input.