I've already done all of the above, I managed to blow some fuel up the line to the carb and let a few drops in... but no Rob.. I dont think its a stupid problem, as fuel is leaking out around the flywheel.

Must be a loose bearing in the shaft from the engine or damaged seal.

I wouldnt miss something like a disconnected fuel line and the only way I was to see the problem was to actually get some fuel up into the engine, I'll take the engine out and see whats wrong with it.