If you have have the instructions they are pretty accurate. if not download them here [link=http://www.evolutionengines.com/ProdInfo/Files/Evolution_60_Engine_Instruction_Manual.pdf]CLICKY[/link]

This engine has a needle valve that was designed to be insensitive in other words you can not go too lean or too rich to start. So if you are used to something like a MDS where one or two clicks makes a difference you need to get used to making a 1/4 turn adjustment. At least that is how I found it to work.

Perhaps you could explain in more detail what the problem is?