All the Evo motors that I have dealt with in the past have needed the same thing.

1- take off the needle restricters

2- bigger fuel line in between needle and carb

I am like the official Evolution motor dude at our local feild, LOL. These motors are awesome, especially the .46 once this is done and they are broken in. They get better and better with time! Try this out and you will enjoy your Evo's for a long time.