It took me about an hour to get the Grove gear aligned to my satisfaction. Its pretty even all round with just a tad of toe-in. Once I had it there, I got Jackie to double-check the measurements & levels with me and then we tightened the 7/16" nuts and checked again. I won't be getting around to drilling until probably Thursday night as I have other things that need doing (non-plane), but whenever it is I'll check *again* before I start drilling, just in case!