[d m moore]

I obviously wasn't clear - and I'm confused by some of the replies. I think I said I was NOT talking about the vacuum adv/ret screw but the one on the top right looking from the front.(Won't use "passenger side" - this is an army truck designed for the British army 1940 so is right hand drive!)

I think C W Gordon has answered my question - I am moving the points plate. I said electronic ignition hidden inside so no points - but is the plate still used? I didn't do or see the installation of the Pertronic and am not expert enough to know what is left of the original system. Maybe I am adjusting something that is no longer functional? But it did make a difference!