@saboor73,u'r wrong sir it's not a 4 stroke in which the lubricant goes till top end.
he is asking about his yb100 which uses a side oil pump method then how come the oil will be lessened due to rings?
mons bro ,Then ur piston seems to be loose in current bore coz if it the worn rings were the culprit then the mechanic would had replaced rings instead of putting helper but its not a bid deal.
I'm also using a loose piston setup which have a helper under lower ring.It's going fine in every aspect.just gives a lil rattling sound in first few kms.it becomes silent after a while.
It'll get a little harder to start when compression drops so kick will be softer but starting bike will be harder. If u'r not facing any of such issues then just cheer.
P.S:sorry for being off topic but needed to quick answer query of my bro.