So i got a sweet deal fmf fatty gold series with power core 2 silencers. The guy i bought them from said he ran stock jetting with no problems. I have jus the pipes, stock carbs, stock foam filter with outerwear stock box with lid and snorkel. Elevation roughly 1200 above, temps about 40-80. From what i have gathered i feel a good starting point is 27.5 pilots and 290 mains. I kno someone will say search and i have i didnt find anyone with my elevation and as stock as I am! Well thanks guys in advance