Mine is a small round one as well, I think I got it from Ron Popeil back in the days when he was hawking them on late nite TV. I have never had this happen before, but I know what I did wrong, I placed the body on the base tray just above the heating coil, then like a idiot I started to walk away (this was in my work shed) but had a paper towel so I just slung it without realizing that it had landed on top of the dehydrator there by holding in too much heat. When I went back out to get the body about an hour later and I saw the paper on the top covering the vents I knew I was in trouble!