Honda-SOHC

Open up the handle bar switch by undoing the 2 screws. From the inside you can access the contacts. Probably have to loosen up the cable lock nuts as one interferes with the screw removal.

All fast drying spray cans are lacquer based. They have a high amount of lacquer thinner in them. In order to do multiple coats and multiple colors, they need to be sprayed within an hour or so or you'll get the dreaded wrinkling effect. These paints are not gasoline resistant. The high lacquer content is used to slightly dissolve the 1st coat for 2nd coat adherence. If you wait too long, like a day, you will get the wrinkle effect.

There are enamel paints which are oil based and can take up to a day or 2 to dry enough for a second coat or second color. They are more gasoline resistant but color choices are limited. These paints do not wrinkle because they don't have the same solvents in them.

The best paints would be automotive paint and a HVLP paint sprayer setup. Unfortunately, most people don't have this. I used to paint with lacquers and then finalize my paint with several coats of clear lacquer to resist gasoline spills. It worked to a certain degree if you wiped it off immediately. But now that I've gotten used to spraying automotive paints, urethane based, it's really the best and most durable way.

What you could do is paint either lacquer or enamel with spray cans, and organize with an automotive paint shop to finalize your paint job with a urethane clear coat. It won't react with either. You may have to lightly wet sand your paint job with 600 grit just to give something for the urethane clear coat to adhere to.

I am not a paint guru but I have lacquer painted a lot of motorcycles in the past like 40 years ago and just restarted painting motorcycles after teaching myself how to paint cars.

Since governments have mandated alcohol petrol blends, we have a problem. How could they is another question. Ethanol will deteriorate everything that was not made with this compatibility in mind. it basically eats rubber, plastic, fiberglass, etc. Carb 1+2 fed from line 1 and carb 3+4 fed from line 2 both from the dual outlet petcock. I suspect you have little rubber bits blocking the idle jet, which is a lot smaller orifice than the main jet.