The last i check ..all of my abc 2 stroke nitro engine dosn't have rings in them..so how in the heck are they going
sit rings that dosn't exist ...is beyond me.

Another thing that needs to wear is the bottom of rod and the engine's casing. The last I checked there was plenty of clearance
in a yammamahaaa...unlike my magnum or OS.lol.

If you had ever taken a 2 stoke nitor engine apart...you'll see notice stuff like this. A nice groove on the inside of casing from
the rod wacking or rubbing at it.
i don't think they need to be sitted...just clearance.lol

yes..i get threary of stressing part or cooking them to make them strong at first.
If it'd going to break...it'll break or fail in the oven. So the theory gose.
if it dosn't..then it probably last forever if you treat it right.
And yes..I've put parts in ovens before shipping it out.

but..i'll stick with the running it rich so there's lub for my rod.
I'll lean it out plenty later.lol