The item's I described as being the power jet's are actually the air jet's
!
I've just checked the POWER jet's 72 for left carb and 75 for the right carb.
I would have expected the rear (left) cyl to be running the bigger jet.
Of course it alway's helps when you know what your'e looking at when trying to diagnose a problem!!!
Just been out for a run, bike still seem's to go better for first 1/2 - 3/4 hour. Perhaps better than it was tho.
Regard's Phil