I recently bought a 1975 308 GT4 from Los Angelos and brought it to Salt Lake City, Utah. I tried adjusting the carbs for the eleveation (4500 ft) But I think I only made it worse. I suspect they need more than an adjustment, they probably need different jets. My question is how much different. The car has a K&N filter, no sound deadening in the airbox (doesn't look like it ever did), no airpump, no cats and a aftermarket exhaust. Car runs so rich now that my eyes water when I am by the engine and it is running. Current jets are: Main: 135 Idle: 50 Air bypass 220 Also anyone else in the area and/or know a good independent in the area?