so, if taking all the strings off at once, and putting them all back on (which is what I've always done) don't warp the neck... then does changing string gauge? even a small one, like from 10-46 to 10-52, which is the gauge change that I did last night as I finally took the stock strings off my gibson (I don't know how, but I have magical powers to make strings last for months! lol)

also, another quick question that I have for my luthier friend, how do you adjust the action on a gibson? it has some wierd thing that looks like you could just turn it with your thumb, but I tried, and it hurts... it's almost like you need a wrench, but I don't want to grind the little thread like things off of the thumb-screwy thing (professional terms, I know)