Tried that 22 years ago hence the mikuni. Amal quality control? Best conversion I've done ! Sorry , but fitted an amal conversion to an Indian 500 bullet. Worse than the cheap Indian micarb it replaced. Unajustable float height and it was left to an independent company to come up with one. Oh and floats that were not ethanol resistant. That's only 12 or so years ago? Not a fan, Roy. Do you still use points and condensers ?