I was going to ask about the fuel actually. I'm currently using Duraglow 5% fuel (http://www.tayracers.co.uk/duraglow-...lon-1008-p.asp) and was thinking that maybe a richer fuel might work better... but i dont really know much about the different kinds you can get and what would be safest and best to use in my engine. I'll definately check the carb to see if i can see any dirt or gunk in there. I havn't had a thorough look for any damage to the crankcase but I havn't noticed anything. Could it be something simple like the manifold paper being in need of replacing? I could try replacing that perhaps but there doesnt seem to be any problem with fuel pressure and it is being pumped down the fuel line as it should be.

Anyway, thanks alot for your help and ill try the things that you have suggested and let you know how I get on

Mike