thanks for all the great responses. good info!
so far ours has a knock of paii carb, 2 petal reed, intake drilled to 12.7mm, and ported to match inlet of 2 petal.
this bike is exactly what we prefer, exhilarating to gain small bits.
-a paii clutch is enroute with extra bits, ramp plate of course.
-proma going on this weekend
afterwards cylinder will get more porting, might get wild..pretty well expendable anyway.
davids pretty big, takes alot of muscle to pull him. we have an express w Athena, proma, vm18, its great except getting off the line.
this bike should be the win for him but, im desperate to find a welder to reinforce the swing, (among others) but not settling for junk.