Pivot bolts are 12mm 8.8 grade, socket head bolts.
Non uni side now has a nylon bush through the housing and a tapered bush that seats in the existing bearing cup. This pivot bolt screws into a mounting bracket, welded to the firewall.
The uni side has had the cup removed and steel 'plug' machined to replace it, this is to be welded in. The plug is drilled and tapped to M12. This bolt will be locktited into the plug and will rotate with the swingarm. It will pivot through a urethane bush in its mounting bracket.
Under any reasonable situation, the bolts and their mounting holes should all be on the same centre line.
But this is what is occurring. With the bushed bolt in the lathe chuck, the centre point at the other end is about 5mm diagonally off.
CycleKarts
swingarm pivots
How I am mounting the swingarm and the strange alignment issue.
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One "fix" (and I use that term very loosely) would be to make an eccentric bush to bring the two into alignment. Easy enough if you have a 4 jaw chuck. Just need to ensure that it does not rotate in the pivot arm when installed.
A better (but no more elegant) solution is to break out the oxy and persuade them back into alignment. Hold the base, maybe even tack it to your welding bench, and heat the left arm below the pivot housing. Then use a long lever bar to realign. Wouldn't take too much. Might even be able to do it cold with enough force.