just a question to other wee users, how much mechanical noise do you get from the engine? Mine runs well, doesn't use any oil, starts easily and revs freely but sounds like no other engine I've ever had, especially at tick over and just above. I seem to get all sorts of different noises at low revs including a sort of ticking sound plus a whirring and just lots of general mechanical types of noises. I'm not too worried as I suspect its probably normal for the bike plus its been making the same noises ever since I've owned it. Its just that its like no other motorcycle engine I've ever owned in the last 30 odd years.