I'm glad this thread showed up at this time. I've been putting off reshimming one of my engines that I put together a few months back. It has .021" (.53mm) endplay. When I took it apart, it had no shims. When I put it together I used Yamabond 4 on the case halves. I think I'll try again without sealant before I add shims. Not a big deal, as I checked endplay as soon as I torqued down the case bolts, so not a lot to take back apart, I just have to do it (instead of a dozen other things I've been working on).