haha mine is rattling too!... which is mainly why I want it off. but it doesn't sound like whatever is inisde is going all the way to the pad. I'm thinking the but is still soild under the pad, and only the very center is hollow... might have to take off the pad then drill a decent size hole to get it out if there isn't one. which is why I was asking what was under the pad. is it solid or is there a hole?
and what exactly is under that I could screw a pad into? just self tap into the fiberglass?