Thanks Roland. I do have play in the axis, but any tighter and it stalls.
I'll remove the housing and take a look.
It's a fun project!
Ps- will any high end silicone grease with good temperature ratings be ok? I have a high end silicone vacuume grease on hand. Otherwise I can get the 105 grease specified in the service guide you made.
Thanks and happy 4th!