Yup, freed up and turning great after all the excellent advise!!!
Now looking at building a funky Frankenstein gear box but it would mean taking out the pinion shaft....
Yes had it running once but had some issues which I put down to a blown gasket, I then completly stripped down the engine, and boxed it up with some other spares I had acquired and moved house just before xmas. Only just unboxed them today and resparked my interest!