I don't know if this is any help to you...you probably know this already anyway.
[ toc ] 3. Adjusting the Right Ascension Lock
After a period of time, it is possible that the R.A. lock (7, Fig. 3) of the LX200 will not tighten sufficiently due to internal wear of the clutch mechanism. In such an event, remove the R.A. lock lever using one of the hex wrenches supplied with the telescope. Then, with a pair of pliers, tighten the shaft protruding outward from the drive base until you cannot easily rotate the fork arm in R.A. (Take care in this operation not to damage the cosmetic finish of your LX200). Replace the R.A. lock lever so that its handle points straight out from the cross-bar connecting the fork arm.