Ok, I've been playing bass for a while now and I'm not getting the really clean sound alot of other people are. I have aFender Geddy Lee Jazz which is a very good bass and I don't think the problem is in it or my Ampeg BA115. When I play faster songs it sounds like my strings hit the pickups. When playing the galloping rhythm in Iron Maiden songs it can be inaudible. I can't figure out what I'm doing wrong.