Just noticed the other day. I was moving my GK MB115 combo to the car the other night when I heard something clinking around inside. The amp is still working fine, just wondering if this could possibly lead to some kind of electrical hazard. I really dont want to have to ship it back and use the warranty. Im going to need it for a gig in about two weeks and Im not sure how long the shipping/warranty process will take. Has this happened to any of you guys?