So I fixed the ignition switch yesterday (76 cb 550 ss) and took the bike for a ride, rode good, like it had before the switch problem. Today, take the bike out for a bit, rides good, get gas, rides good, go to the beach take a nap in the sun, get on bike...... three four kicks, ugh, use the starter, starts up, doesn't ride so well.... breaking up around four grand and backfiring under load like crazy, no power, header pipes are not too hot, but all equal, got spark on all four, figuring carbs or bad gas.... where do I go. and what screw does exactly what on these carbs, there's one pointed up on the outer side of each carb, an 11 or 12 hex on top, and the small flathead with a lock washer on it on top as well.... Was going to pull the plugs to look, but alas, i don't have a socket here, and i just brought all of my tools to Marin earlier today for my new job, was going to ride to work thursday for my first day, guess not now... also, running points, and Dyna 3 ohm coils, have had no trouble with them for almost two years now.