I jacked up the plane and tightened the left axle nut fairly snug while turning the wheel to make sure the wheel bearings are nicely seated. I then loosened the nut until the wheel could turn fairly freely but there was just a little preload on the bearings so that there is no side to side plan. I basically followed the instructions at the Grove Aircraft site. Afterward, I drilled the axle through the front and back holes and test fit a cotter pin. I then took the nut off and deburred everything.
While the nut was on the axle, I marked where the bracket will sit so that it will be level with the ground when installed. That way, the screws that attach the bracket will be easier to reach.