I'm getting a new carb and it comes with a 190 main jet and a 60 pilot So what exactly do I need to do jet this I am running a fmf fatty and power core stock internals and open no air box lid and oil delete. What things have to be changed in this carb. I know fmf suggest a 260 main so while I have to change just the main jet and be fine or do I have to change needles and all