Perfect. Wasn't sure of the default setting for bypass screw, that's very helpful. When you say "actually moving"? Choke is all good; once engine is warm the throttle is on the bottom of cam and butterfly valve is upright. Sounding likely that I've done a pokey job of setting the static timing. Wasn't aware that the lightbulb method would work with pertronix, so set it roughly using mark on dizzy lip to get engine running and used strobe light.