=CB= said:
Loosen the truss rod.
A neck "stand alone" will be flat or very slightly backbowed (middle of the neck closer to the strings), when the truss rod is loose. Once you put strings on it, you can see how much the truss rod will need to be tightened. Ordinarily, the neck will front bow (middle of the neck away from the strings) under string tension, and this tension is countered with the force of the slightly tightened truss rod.
Since you've tightened the truss rod completely - and the neck is all twisty now... you may want to consider letting someone else (who knows what they're doing) put the guitar together for you.
I'm sorry, on the contrary, Warmoth necks normally ship with the truss rod loose and a bit of relief (forward bow in the string direction). When necks arrive at thier destination they may change given the climate the neck encounters.
What I will usually do when putting a new neck on is to straighten the neck as straight as I can get it by tightening the truss rod a few turns. Then assemble and the string tension usually puts back the slight forward bow (relief) I need for optimal playing. With your Warmoth Pro neck, you can use the side adjust for fine tuning the truss rod tension...(don't forget to loosen the strings while you're tightening the side adjust).
If you feel on the main primary truss rod adjustment that you are running out of threads, you can also add a truss rod washer or two underneath the nut to gain more play. This instance is rare and if you thinking about that, call Rob Rounds at Warmoth to discuss first to make sure this is the right course of action for you. Thanks.