While contemplating whether to grease my gears, I discovered that I can rock my RA "left and right" in the Park 3 position of my Mach1GTO. I can just barely see it on the RA marks but can definitely feel it. I can't do the same rocking motion on my AP1100. Note: Mount is powered OFF when I do the rock.
Should I do the "Checking and Adjusting the gearbox backstops in RA and Dec" from page 32 of the manual?