Knotty - Good information. What lube do you use on the turning sheave? We only have one. How do you get about 12" up in the trunk to lube it?
I think that if it were possible to access the sheave pin, I would use something like NeverSeize. That stuff really stays put. But any good grease should work fine.
If it's not easily accessible, I would probably use a spray Teflon grease. It comes out of the aerosol can as a liquid and quickly set up into a grease.
I really can't tell you for sure without seeing it.
Can you see it pretty well?
If you can see it, maybe you can make longer straw for the spray can. Or maybe the stuff will squirt far enough without a straw.
It seems strange that they would design it in such a way that you can't maintain it.
But I've seen stranger things.