Well, after a year and half of riding daily and
over 5 thousand miles, I had to re-ring my ThatsDax little china girl.
It was hard starting and started loosing power as I once remembered.
I used a brake caliper hone to lightly break the glaze in the jug and
cleaned the carbon off the piston dome with a 3M scotch brite pad.
Replaced the piston pin and small end bearing along with the rings.
Siliconed the base of the jug.
Made a new gasket for the intake, put on a new head gasket.
Put in new spark plug.
I took it out for 15 minute break (seat) in run and
it has that new motor feel and smell once again.

I love these little motors, so easy a C... man can do it.
Homer