I wanted a way to tune and balance my own carbies This webpage www.carbtune.com has two tools the Colourtune and the Carbtune that make it easy for anybody to tune and balance their own carbies on motorbikes. The Colortune has a clear spark plug that lets you look into the combustion chamber while the engine is firing. The colour of the combustion flame tells you if the mixture is correct. With the carburettor mixture screw you can then adjust the flame colour to get the correct mixture. The Carbtune motorcycle carburetor synchronizer will accurately sync the throttles on motorbikes. On the web page the it all seems straight forward enough Has anyone else tried this equipment or is there a mechanic out there who can give a professional opinion.