I know the carb is rebuilt correctly, I've rebuilt endless 2-stroke carbs..The one thing I thought was strange is the air mixture screw is only back out 3/4 of a turn ,but this is what it was set at so I put it back the same .. I know my scooter and dirt bikes are all about 2 to 3 full turns This is my 1st Enfield and I love it.. It's modified as minus the engine itself.. The pipe, carb, air filter were done at a Enfield dealer shop . It was re jetted for pipe and carb..this is the way I bought the bikeThanks again for your help and advise..