#1
I have a schecter hellraiser guitar, it is currently set up to be in drop c with .13s... if i were to switch my strings to be ernie ball skinny top/heavy bottoms in drop c would i need a truss rod adjustment or would i just need to adjust the action?
#2
probably. the effect in change of tension will affect different guitars differently so the only way to know for sure would be to string em up and see what it does to the neck relief after a few days.