I changed the seals on my Cool hubs last week and then went fishing. When I got home the right side cap had come off. I assumed that someone had tried to remove it in the parking lot but it had no evidence of tampering and was not lost due to the cover plate. It had been seated properly against the O-ring. The bearings are fine but I was wondering if Lyn had ever seen or heard of this before and, if so, how could it happen.