Mike- I recently purchased a second hand G11 and found the RA axis very difficult to move with the gears removed. I removed the RA head, removed, cleaned and regreased the bearings and it solved it completely. I carefully inspected all of the bearings and if any looked anything other than perfect I was prepared to order replacements. In my case, they all looked good and cleaning and grease was all that was needed. If you're at all mechanically inclined I'd recommend going one level deeper into your mount and see what you find.
