I couldnt let it lie, i would have spent all next week on fantasy island wondering what was the reason for Shovel smokiness. So i had a look, piston and rings perfect, bore perfect (ive honed it as it was a bit glazed), valve guides perfect, everything is spot on ! so why does it smoke on idle and why is the combustion chamber oily ? Who knows, anyway i can order the gaskets etc on monday and everything will be ready to fire back together when i get back.
Maybe i should wave some chives at it.