And I find them total junk. They really don't seem to last very long and aren't worth the time to even rebuild. When I get them in a trade I either give them away or use them for parts. I have some OS and YS engines that have been in constant use before a lot of people on RCU knew how to talk or walk. I just pulled a YS 1.20 that has been in constant service sense 1988. I'm going to just give it a new ring and lap the valves. Everything else in it looks and feels good, even the bearings.