I like using flats on my bass, right now I have GHS Precision flats medium .045-.105. If I switch to a lighter gauge such as .045-.100 or EB's 2808 (.040-.095), what differences could I expect as far as sound? Would switching to a lighter gauge have any effect on the "action" of my bass? Sorry for the questions but I've only used mediums in the past(.045-.105). I use a Geddy and the Ampeg BA-115(100 watts)combo. Thanks. Also, by changing to a lighter gauge, will I have to have the bass "set up" again?