best thing yet,like i thought,I had the wedge thing backwards..it lights from the big side wedging across the piston to the quench side for leverage

and good quench,happens very fast and can actualy cool the air/fuel charge some for better ignition of the fuel.IIRC

and yes the angle of the plug and 10 to 2 "o-clock" would be in the ball park

worth checking any head IMO

just making sure the flame is not blocked on 1 cly or more per head would be a good thing,IMO