Dear all, In between practice last weekend, an absent minded friend of mine decided to pick up my go-to bass and give it the guitarist treatment. Once he was done he placed it on a chair from where I saw it sliding back down and hitting the floor. It was still plugged in at the time. Now I've never treatment my instruments in such a manner so it obviously hurt, and it was an instrument that I've put plenty of time and money into and modified on my own. When I got to it, I saw that one of the pickup screws had come out from the impact. I wanted to see the damage done aurally - the bass and mid frequencies sounded extremely distorted around the lower notes. It's a 5string with a high c string replacing the low b. A friend recommended I change the batteries on it. I did, and I rechecked. The sound was much better although a lower lever of distortion is now audible on all notes, both in passive and active mode. All seems to be okay with the wiring from the surface at least. Could someone please help me figure out what is going on? Guitar techs where I live are non-existent. Many thanks in advance.