Ended up cutting the right side engine hangar and moving it to the left to get the sprockets back in alignment. engine was pretty crooked, it must have been progressively getting worse ...
While I have the swingarm off, I decided to go with heims instead of trying to make bushings. My buddy Frank is making up a pair of 1.5 diameter "bungs" to fit inside the box tubes and mount the 1/2 inch heims into. Overall it's going to extend the wheelbase about 2 inches. Once these are together I'll test he swingarm travel to find out if i need to cut anything else out of the way. That's the one thing i didn't test---figured (wrongly) that the shocks would bottom out first based on their total travel.
Still need to grind the welds down to get the tube fully seated.