1985 xr200r Guy said it was run out of oil, ran a year ago, saved it from being thrown in trash. We offered 100 bucks, so now it sits in my yard. I offered to look at it and rebuild the top end. Ordered a thin walled socket today so I can't test compression without that. Gotten into research and a lot of people talk of difficulty finding parts. Im having a hell of a time. Any tips, haven't seen inside engine yet, hoping I can rehone and just do rings and piston. Do these even exist still? a piston kit that will fit it? Sorry if this has been posted before, if it has maybe a link?