Forgot to post the pics I took today.
Apparently these grooves being worn out means these pistons are junk. either way, gives me an excuse to replace em.
The shop said it looked like this one had been replaced. It didn’t have any grooves at all, so I am not sure how they were important in the first place. it was definitely non-matching though. makes me wonder.
Bearings were actually in O.K. shape all things considered. I don’t believe I will need any machining done on the crank or anything.
And finally, today