Sorry for the uneventful day Mark... Hope today / tomorrow would be good for you.

I think the most important thing about the thrust bearing is to make sure that step 8.7 on page 28 of the manual to put shims to minimise end play is followed. Next make sure the thrust bearing is installed correctly. Inner ring (5.0 mm) first towards the clutch shoes followed by the bigger one (5.2 mm).

If you use the Mugen Super Grease, you would not need to grease it often. I have not greased mine about a month of racing and it still works plenty fine. You can still see grease sticking to the balls of the inner ring.