No, Shadetree, I didn't. I don't have the tools to measure the cylinder, and I don't know what to check for 'play'.
Not sure what you are getting at. I'm not a pro wrencher, as you can tell. Seems to me that if the compression is good, the ring gap shouldn't matter. Are you suggesting that the cylinder may be bored beyond safety limits?
Could a out-of-round cylinder, or play, or ring gap, be the cause of the miss that was the issue I asked about?
spark plug is black either from running rich ?, or oil rings worn out. when I say check for play, once the top end is off, piston removed ( MAKE SURE YOU PUT A RAG IN THAT BIG OLE HOLE WHEN TAKING CIRCLIP OUT OF PISTON ! ), take the wrist pin, push it just inside the top of the connecting rod, to where the end is flush with the other side, now take your hand, and lift up, push down on the long end, the wrist pin SHOULD NOT move either way. after this check, grab the connecting rod, while crank his not moving, lift the rod all the way up, gently lift up, push down on just the rod, there should not be any movement at the lower end of the rod where it sits on the crank bearing !!. you really need the service manual to check specs. but in your case, lets just let you wing it, and go all the way old school. one thing that hurts by doing this is, you wont be able to tell if the cylinder is out of round ?, but you still can check ring gap !. remove the top ring off the piston, slide it down inside the cylinder edge wise, once down inside the cylinder a good ways, flip the ring to where its sitting in there like it would be on the piston, have a look at the ring end gap, if its too wide ?, this is a problem. make sure you pay attention to which way you remove the top ring from piston!!, IT HAS TO GO BACK ON PISTON THE SAME WAY YOU REMOVED IT !!. now do the second ring, same way/same test. then do the oil rings, becareful..oil rings bend very easy !!. ring gap should not be much on all rings. if they are ?, then you can try new rings. but I would have the cylinder checked for being out of limit specs, as well as condition of crank before I went any further !.