changing from .09 to .10 wouldn't cause much problem unless your guitar has been setup for really low action/little relieve with the .09 strings. so by factory standard, it shouldn't cause any problem to the neck and action.

the problem may come from your trem bridge. you might need to tighten the springs.

OT: what can you do with the d'addario's packaging? how to redeem it? i have a bunch of 'em that i refuse to throw out .

This post has been edited by zeroglyph: Mar 3 2008, 11:16 AM