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[QUOTE="joe28kdx, post: 258030, member: 25054"]
[b]Rin Groove sizes[/b]

I swapped out my stock piston for a Pro X and descovered that the top ring in narrower than the bottom. I found this out cuz they sent me 2 bottom rings.
It's only .001 but it makes a difference.
I'd check my piston for sizing or for that matter swapped it out.
Scratches aren't good. If you know a cool dealer show him, expect the worse when you go though. The rings can't seal over a scratch.
There's a letter on you cylinder that tell what size to order a piston, (standard, .001 over size etc..) Maybe they or you can hone the scratches out. Have the dealer look at it. the plating is not thick, but it can be done. 
I made a tester to pressurize my bottom end to check my seals,use it all the time,found 2 motors that had seals leaking, adverted a big problem. With an engine that old, it might be smart to do the bottom, bet the $@##$%^ out of a seize later on.
Good luck!
Joe
2001 200 
2-TTR 125 Boy "A"s and "B"'s

The older I get the faster I was!
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