Eric,
I know exactly where Lake City is. It's just off I-75. I go thru there when I go to Alcoa, the town I grew up in.
Now the way to adjusting your sliding roof slipping clutch mechanism. On the nut of the gear mechanism (the nut used for emergency crank operation) bend the locking tab down flat. Use a screw driver and hold the shaft and tighten the nut. Turn just enough to get the clutch adjusted.
As for lubrication, the manual says to clean the rails and lubricate with non acid grease. Good luck.
Bill Lewallen Lexington,Ky.