Dave I have been throwing the SE valkyries for turnovers and rollers and I have been informed that they are no longer in production. Although, My kids have been digging through my stacks of extra disc and made me aware that I have a SE leopard so I went to throw it and it seems to be overstable. I thought the Leopards were made to be understable? Is it the plastic that makes it overstable or do I need to just break it in a bit? Your response would be greatly appreciated...