Well, my thoughts on this are that the ring gap is towards one side of the piston and the piston skirt will seal the compression in one direction but not in the other because the piston will actually rock back and forth as it moves up and down in the cylinder... Depending on which direction the connecting rod is pushing on it. But it does seem to also be an indication of ring gap?

The Super Tiger engines have a pinned ring that the gap is most likely in the front quadrant unless someone put the piston in backwards. So it will have the same compression either direction.

GelCell and hobbsy have reinforced my suspicions and were the responses I was looking for.

Thanks,

Jim