Originally Posted by
GAtkins
Indeed an extra step. I'm told, but I don't run mine this way, is that the ball is sufficient to mount and use the rack. I use a locking pin and the ball is tightened more as an anti-wobble device. Solid as a rock.
Glenn
My rack has no slot, just the ball and I do check it from time to time. If I have lots of bumpy roads, it does loosen a bit but nothing terribly.