Thanks for the research Doug, however I'm gratified to see that Scott no longer suspects he damaged his cart after all. In my experience, it's usually all or nothing: either the cantilever is across the room under sofa, or you've lunched a delicate wire and there's no signal, or it's a false alarm and everything's OK (save for the heart attack). Cart's are pretty tough little buggers - right up until the point that you destroy them...
:-)
:-)