Hi Chris
Sorry for the delay in replying – holidays sometimes get in the way of Scotting!
To answer your questions in the order asked :-
No, I don’t add any two stroke oil.
I use Champion N6YC plugs.
Oil supply is 1drop every 6 pulsations. This ratio hasn’t caused me any problems, probably because my engines are well worn, although my ’38 Prototype Clubman Scott has recently been bored 0.080″ oversize with new pistons, I cruise it at 50 – 60 mph at present until I get a few more miles on the clock.
The pump is crankcase mounted.
Hope that helps.
Dave
