My 79 RS is running great, but only when warmed up. This bike is a bugger to start. Cough, spit, sputter, clang, etc. The valve clearance is perfect, new points/condenser installed, dynamic timing is spot on. Carbs rebuilt (chokes are not reversed) and synced. Carb history is as follows... much to my surprise I bought the bike with different model Bings. The right carb is 94/40/114 (for the RS), the left is 94/40/107 (for the S/RT). Even though the bodies are different I followed the Bing catolog and made certain that the jetting of the two carbs are identical for my model year. This means that I replaced all new jets of the same size for both, even though the bodies are numbered differently. Yet the bike still has starting gremlins. Again... once it's warm it runs well. I'm assuming that the carb bodies are the same, simply jetted differently for different model bikes. Perhaps this is NOT the case. I'm trying desperately to track down my starting issues. Perhaps the forum could suggest a fix. Thanks.