I just posted this thread, but in another forum accidentally. I am currently using GHS Boomer .11s. If I were to go down to .09s or .08s, would my neck bow?
negative, it might do the opposite. put them on and play for a couple days, if everything is alright then your good to go. if some of the notes dont ring, then you'll need to adjust the truss rod to compensate. if you dont know how to do that, take it somewhere and explain what is going on and have them do it for you.
Yea probably, you'll need to adjust the truss rod and the intonation.