Went across the border and picked up the choke cable and Yost tube, and then did the parking lot mod.
As soon as I fired it up I could tell the different. Adjusted the PMS
to 2 turns, readjusted the idle, played with the PMS to find the 'sweet spot' and then rode away. No backfiring on decel
Rode 200 km home and now have to fine tune the carb
.... but I think it's close. Mileage looks very good for speeds under 55 mph. Will verify when fill up the tank but it looks like probably around 50 mpg.
Will monitor emissions at idle but I can tell from the smell that it's not as rich as it was before.
... the main
jet was a bugger to unscrew. Whoever put it in must have monster hands.