I have a 75cb360T that I've been trying to diagnose off and on for about a year. It is getting way too much fuel and float level has no effect. I have rebuilt the carbs using the old brass and sync'd them and messed with many different float levels all to no avail. The bike will run but fouls the plugs within minutes. Eventually it loses power and dies and will not start again until fully cool. I have posted here about a year ago and followed advice with no change. My latest theory is old soaked plastic floats that are heavy and constantly dumping too much fuel into the cylinders, giving me the running rich effect. I removed a float and it weighed 11g. Is there any way to check old plastic floats? I'm looking at new brass ones on dime city cycle.