Kit of Parts - Sprocket Spacers? and Transmission Lubrication?

[wmurphy]

Q1. In order to correctly mount the sprockets on the motor shafts, there appears to be a "woodruff key" and maybe a "spacer"? or something that slides over the shaft? For some reason, our guys can't seem to find them in the kit of parts. Are we out in left field on this one? How do we actually mount the sprockets (2 wheel drive version) to the transmissions?

Q2. What type (and how much) of lubrication is best for the transmission gears?

Thanks,
Murf
Rookie Team 1529