Need some help. I purchased carb rebuild kit with new jets and gaskets. Starts right up and idles great. Push throttle and it bogs down. I took main jets out again and made sure they were clean. Put it back and same issue. I adjusted fuel needle valve to specs. Thought it was a carb issue but I took another carb from exact 450 Forman that runs great and put it on the rough running quad. Had exact same issue with carb from other forman. Now I know it’s not a carb issue. What else am I missing to check? Fuel is running through lines and it runs great on slight choke. Please help.