Post carb rebuild tuning tips?

OK, after a detailed cleaning of the carbs and replacement of all rubber, my bike runs! What a relief. After minor adjustment to the sync screw for the #4 carb, the bike was synced. I guess the time and patience on reassembly was worth the effort. I've lucked out on float adjustment too, I just verified levels. No adjustment required. All things considered, I think things are going much better than expected. Now I only have two small questions.

I set the needles 2.5 turns out and stuck the colortune plug on and each cylinder seemed spot on. The thing I can figure out is that I never saw orange flame unless I blipped the throttle. It's a nice deep blue and no smoke.

I went for a ride and about 10 minutes in, the idle went up to 3K from the original 1200 and stayed there. Sometimes It would drop to 2K for a bit. I came back and adjusted the idle knob down to about 1200 and called it a night. This morning, I gave the bike about half choke, hit the started and it came to life with just a bit of roughness. I only let it run for about a minute, but it was as easy to start as my Roadstar, so success?

Thoughts?

Thanks.

 

Read the spark plugs for fine tuning the mix screw.

You are probably still slightly out of sync.