Once again cheers bill and kenf, just by way of a update, going to order some new ngk plugs from the green spark plug company today, and Brian at lightning spares is ordering me a new points body securing screw. Last night I went over a few things again and decided to try running the bike with the advance/retard lever pulled almost all the way back and it does seem to run a bit better, a bit quicker and sound a bit less rattlely and tick over more evenly with the ignition set retarded. So timing could be set to far advanced maybe. I'm going to have to get my head around learning how to set the timing I think.
I do remember when I had the timing side cover off when I was doing the dynamo belt conversion I did check to see if the nut that holds the fibre timing gear on was tight, when I tried tightening it it did move/tighten a little, I don't know if the magneto shaft has a keyway on it but if it hasn't then I might have upset the timing then ?. What do you think ?. All the best fella's, chicago