Lozza might shoot me for this theory but--all good fun--i think!!. Ok, not sure if i fully understood but think rings don't fit around/under/over the peg. Now going back a lifetime to my RM125S 1985, i got a set of rings [genuine] & sat them in the bore to check gap & thought fk, has about 20+thou gap then looking at the piston [genuine] the ring peg sat flush with the ring land & covered all the groove. New rings had heaps of tension & this is how it was meant to be & was gaped to the peg [for clearance/expansion etc. So, it appeared that ring gap wasn't the important thing but wear on the ring where she slides past the ports is what kills the sharp edge of 2 stroke power. Digressing slightly, new rings in my "86 KX125 days always sharpened it up even though the rings taken out looked ok for gap, but slide them down a bit & hold up to the light & could see past the rings in line with the ports [or exhaust in particular by memory]. Sorry about the long story but thinking just gap the rings square on to the peg with a bit of end clearance & go for it. [if your stuck for the proper parts that is]. Cheers.
