My friend Mark put in 4 hours with a needle scaler and die grinder inside the stripped down crankcase yesterday. He's just got a bit more work to do in the lower sump, which he needs an angle die grinder for. This crankcase interior was very rough with sharp bits protruding and badly needed grinding. It did finish up nicely. It will get a coat of glyptol type red electrical varnish (thanks 38ac). The machined parts of the case look quite good and the casting looks sound.
It's quite a change from my Metro Listeroid; this is a true CS clone with the oil pump, upper and lower sump, 7 bolt head, one piece cylinder (no sleeve) and bushed mains. I'm ambivalent on the clone vs listeroid choice, but I am glad to not have to deal with the inevitable liner protrusion.
The head is flat overall though somewhat wavy, and I think I'll put it on my sandpaper/plate glass and see how it looks.
I'll be uncrating Jeff's new ST-3 from Central Georgia Generator tomorrow. Tom at CGG has upgraded the bearings and bridge diode on these, so I'll only have to add 4 EMI suppression capacitors on the bridge.