I wouldn't believe it if I hadn't been the one to discover it, but I actually found a rock inside of a racquet. A student had just bought a brand new HEAD LIQUID METAL RADICAL from our proshop. The racquet had come straight from HEAD to us and then straight to my stringing machine. The next day she brought the racquet to me complaining of a rattle in the handle that would come and go. I had to hit with the thing a couple of minutes before the rattle came back. It was a serious rattle and I could tell that it was more than a bit of graphite (drill flash) or part of a staple. I pryed the trap door off the buttcap and shook it until it stopped rattling. I didn't see anything fall out, but the rattle went away and I thought maybe I had missed it. A couple of days later she brings the racquet backwith the rattle agin. So this time I took the grip off and pulled the staples out. I removed the buttcap and looked inside to find something lodged in the handle about 4 inches in. I used a coat hangar and pulled the piece out. It turned out to be a smooth little rock about the 1cm X 1cm X 2cm. My question is this....How in the world did a rock get in there. The racquet had no signs of the buttcap being removed before. Not to mention the fact that the plastic was still on the handle when I strung it. Obviously the rock couldn't fit through the grommets. It was also very difficult to get it out through the handle. It couldn't have just fallen in, it would have had to be forced in. Anyways, I just thought some of you would find this interesting.