I have had them stretch to the point it no longer adjusts tight, and normally I just remove a link and keep cutting.
I have spliced several chain sections into one loop, sometimes miss matched.
A couple loops that was full comp stihl RM that got rocked, now with a section of was square ground full skip added in place.
Cuts smooth, and just as fast & easy as regular full comp 3/8" RM.
people see it on the saw and think i'm a cheapskate who doesn't know anything, and they're mostly right.
I can't imagine worn to the rivets...