Thanks for the input, very much appreciated.
Ponied up for the membership here - well worth it. I guess it takes a manual permission for me to see the member forums..
Engine is standard except for a Posh Firm de-restrictor under the seat, and an oiled Uni air filter that I added. The filter might account for some of the richness I guess..

Plugs... hah, yeah I guess it was just a little rich....


And found a possible reason for the low oil delivery; as found when I pulled the tank off. Locktite is your friend I guess!

I'll check the carb balance, set the oil pump and leave it rich until I know the pump is delivering a bit more oil.

thanks again,
Chris