Cant seem to figure this one out. I have a set of stock 500 carbs, 627B, with stock jets, and needles. New points and condensers, new plugs. It idles rich, loads up at stop lights. Anything over 1/4 throttle, and its powerless and sputters like its just dumping fuel. I raised the needle slip to the second from the top. The plugs are black across the board. I checked the advance (removed,cleaned, put back on) which is working. I haven't synced the carbs yet, thats on the to do list. It has pod filters unfortunately, but its what I have. Valves are adjusted, and emulsion tubes are clean. I also set the heights of the floats to 22mm. What should I try next? maybe a 98 main?, hence the title.