I bought a G-Dec off ebay for $125 on 10/19/09, and unfortunately the receipt says "pawn shop" on it. The wheel jumps all over the place and Fender won't cover the warranty on it without the "original" receipt. Is there anything I can do? I've taken it to two stores and neither will deal with it. How can this be repaired? Fender doesn't even repair them, they have the store send them back and then Fender sends a replacement. Am I just out my money? Any advice other than buyer beware?