Yes I discoverd i needed the fibreglass one when i just got my carbon ones

But when my bike has a bit more eunf it it will it be better than fibreglass?
It deffntly cant be the coil thing becuase my bike still works happily at low throttle, its only when I "open it up" I have a problem. And about the carbrutter i dont want to go messying about with stuff i dont know about. I know everything about engines but when it comes to carbruttuers iam not the man to ask.
I think i might get fatboy from ebay, everyone keeps going on about them, are they really that good?