Some good news, Keith and I have come to a compromise on repair cost and shipping, with some extra thing thrown in. He said that the carby diaphragm gasket was crushed out which may have coursed the lean run. He said the timing problem was his fault and just for the non-believers he said that I set the timing spot on. Now the engine is all repaired, very speedy recovery also it four strokes at 3 turns on the high needle. Thanks for all your comments and support.
Regards john Leigh