I've only had a couple of Saito's but I would recommend them to anyone. Having said that, I just bought a O S 91 surpass/pump job so we'll see how he does. It's just that when I began to read all of the stuff on peeling liners, a few of the guys at the field were losing bearings in their 46 and 50 fx's. not just one set per engine mind you, but several stainless included. This led me to believe that that there was some align bore issue don't know for sure.