I just took my 3 month old Fender MIM Precision Base in to get set up. Can I get some insight into the following:? 1. All of the strings are much lower now and my E string sounds distorted no matter where I put my finger on the fretboard. The other strings sound fine. Is this because my E string is set too low now? It is lower than the other 3 strings. 2. If my E string is set too low, how easy would it be for me to raise it myself? Would I be better off taking the bass back to the shop and letting the guy raise the E string? 3. The guy at the shop insists that there is no difference between a Squire and MIM Fender. Is he correct or should I find a different shop because he is an idiot?