I have been adjusting the carbs, a 229 on the front and a 289 on the rear. The off side sets up well, with slightly rich off peak leaving the air screw about 1 turn out. On the front finding the same point leaves the air screw tight in with no adjustment left. By fitting a larger main jet (180 at present) would that allow the screw to be backed off to regain some adjustment. The holes in the jet block are clear.
Ben.
Ben.