[Sammus]

I'm not sure, I didn't investigate it too closely personally. He was pissed off because of how sloppy they got quickly, tried tightening them up to no avail. Could be a lot of things really, maybe the surface they are regularly run on, or sloppy maintenance. It turned him, and by proxy me, off pillow balls though. Not that I thought all pillow balls would be really bad, but I didnt want to drop a few hundred on a buggy that used them just in case though.