Ok, on my GT-5, the Blend knob has just today gotten very loose to the point where I can turn it in a full circle, which its not supposed to do. I don't know what I should do about it either. Should I take it to a shop or is there something I can do myself without injuring the bass or the controls? Your help is VERY appreciated. Peace. Oh crap, I just accidentally pulled it out and now its even looser. Help PLEASE!! I can't play without being able to pick what Pick up to use. Thanks again.