Mating surfaces cleaned up and flattened on glass with 800 grit wet/dry paper, all threads cleaned out with taps, final cleaning and deburring:

Transmission cleaned, inspected, installed:

Waterpump rebuild kit from Tyga. And a used waterpump drive gear (also from Tyga, thanks Matt). Just waiting on a new water pump cover from David Silver Spares to replace the cracked one, and some free time:

Even a magnetic oil pan drain plug! I'm a big fan of magentic drain plugs and put them in all my bikes.

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MC21R9N track
MC18R2J track
CBR954
CR250