I have to add pegs to the swingarm for the snail adjusters, but I needed to get the wheels in alignment first. It drives me crazy when you can’t trust the accuracy of indexing marks. So, I disassembled my Chop Source frame jig and I’m using the side rails to align the rear wheel to the front. The front tire is right at 1-3/4″ narrower than the rear, so a length of 7/8″ OD tubing on each side take up the space perfectly, keeping the two rails parallel when clamped against the wheels.
I’ll use a pair of 6mm socket head screws as pegs for the stops. They’ll get threaded in, then spot-welded at the front, opposite from where the snail adjuster plate contacts them.