MOPED ARMY

if u can feel em with your finger nail they r too deep.

Fortunately they're not that deep, seems to be more aesthetic than actual scratches.

The relaxed gap in that ring seem way excessive. I would be pulling off those rings and then putting them in the bore by themselves to see what the gap is using a feeler gauge.

The rings look pretty beat to me. Heavy chamfer on the top edge shows its been really broken in. But the side where the "blow by" is the worst, the ring edge is practically gone. The should be nice and even all the way around with nice sharp, machined edges. Your squish looks shot too. I'd start with cleaning the cylinder, head, piston and ports and slap some new rings on that thing and recheck compression. Don't forget to cut yourself a new cylinder base gasket. Over time and breaking in, the leading edge of the rings will get a very, very slight chamfer to them. Some people will even file and ever so slight chamfer on them before installing to cut down on break in time.

That piston and rings look like royalty compared to what I have running very nicely in my FA50 . And , have been for years . It's a very reliable 30+ mph machine .

I'd ease those rings out . Clean the ring landings and the rings ( do not chamfer the rings ) .

Put the rings back on the piston , only reverse : top on the bottom and bottom on the top .

Then run a hone through the cylinder just enough to clean it up , but , not enough to take much if any material . Check that all port edges are chamfered .

New base gasket and run it .

While you have the piston out and in hand , consider relieving the piston crown at the ports by about half the distance from top piston edge to top og the top ring landing .

That does two things , mainly , advance the port timing and lowers compression .

Lower compression is what you think you want to avoid , but , once you have something close to normal compression , the relieved crown will help prevent detonation .

Anyway , try 'stuff' . Like piston exhaust skirt holes for lube and cool or maybe shaving the intake skirt or widening the exhaust port or sanding the head or ...

Even if you screw something beyond use , everything is pretty cheap to replace .

Mostly , have fun . :)