Situation: School battle of the bands. Basically while I was away from my bass somebody had gone and ****ed with it 5 minutes before I went on. They then went and did something to the lead guitarist's amp (changing settings, nothing too major though) and untuned our rhythm guitarist's guitar. Now, we still won (in my honest opinion we didn't deserve it but I'll explain later) but that's not why I am EXTREMELY angry. I gave up my personal times during final exams in order to do this - I gave up a LOT of time (missed classes, catching up work, outside of school etc,). I have a couple theorys of who did it (possibly somebody saw me teaching another bass player a couple slap riffs and decided that they should screw with my bass). But basicly what happened was they tightened by E-string so much that it was HIGHER then my A-string (which was de-tuned). My concern is now my bass feels different (and I'm pretty convinced it's not a placebo effect.. Not sure if that's the right word). I'm extremely surprised my e-string did not snap. So pretty much half way through the 2nd song I just "**** this" and just stopped playing, I could not keep playing, My question is could this have effected my bass or is it just me being stupid? Should I adjust the truss rod or take it in for a setup and explain the situation? Thanks guys, and sorry for the probably stupid question.