I have aligned my rear wheel based on the wear found on my sprocket. Note; I am very particular about maintaining proper belt tension, and check it often. I found a % of wear starting on the outside of the sprocket and compensated for this with the adjustment bolts. I find about a 1/32" difference between bolt heads when measuring from the frame.
I would appreciate comments on this with regards to belt, sprocket and importantly-bearings. Thanks.
OH, forgot to add. I do a redundancy check with a straight edge making contact with the rim while rotating the tire.