I`m totally at a loss. Last night, it played like a dream. Pick it up today, action is way high again. Removed the shim, which lowered the neck in the pocket = brought the action down (?) Measured relief, and again the neck had a slight bow. Put another 1/3 turn in it, restrung it. Strings were flat against the neck, but started lifting off the frets within a few minutes. There were no problems with this neck that I knew of when I started this project nine months ago or so. I`ve now put about a full turn into the truss this week, and it`s getting pretty tight. Not sure if this is a factor, but the neck hasn`t had tension on it, and it`s been really humid this week. I feel like I`m chasing my tail; should I just relax and give the neck time to settle in, or what ? Should I take it to a pro for a setup ? I`ve always set my own stuff up, but this has me stumped.