ok so it idles fine and sits happily at max revs (what ever that is) and cylinder 1 is firing at 5dbtdc on idle
but i get a real evil misfire and occasionally a flame fire back out the carb at about 4500 (just a guess)
any ideas?
all new plugs, leads rotor and cap, 155-175psi compression on each cylinder, im completly stuck on what next to try