i recently bought a crate bx100 amp about 3 days ago. and l noticed 2 days ago while resting between songs at band practice that when uncalliced(spelling??) skin(forearms, elbows, etc) are pressed up against my strings, i get a little burning sensation like an electric current is zapping your skin. its not like 1000 volts goin through u or anything but its enough to make u realize somethin is zappin u. i've tried different cords and everything, i havent gotten a chance to try it with my other bass so i dont know if its the bass or not. what could be wrong? what should i do about it?it has a 2 year warranty and there is a certified crate technician in the area. should i return it to the store for a new one? anything will help, thanks.