Need some info, please. I was tweeking my air/fuel mixture screws and developed a miss and rough running engine. The cats have been removed but the system is stock I think (exhaust pipes and mufflers). My question is of the four pipes in the rear which ones corresponds to which carb? The two exhaust ports on the drive side blow out hot and with considerable amount of pressure. The two on the passenger side are not as hot and much reduced pressure. I tried to determine what carb went to what exh. port from the blowup picture but could not tell. Also once this is known can you tune the A/F mixture with a exhaust analyzer since two throats from each carb go out one tail pipe. Don't want to tap into each intake (maybe in another life).