Red Kote will not work. It is not safe with ethanol gas and I do not recommend it. I lined my CB750 Supersport tank and within 3 months over half the Red Kote had dissolved.
I had the exact opposite experience with red kote.
I did some de-rusting first with metal rescue. Poured in half the quart of red goo. Did the tank rotisserie while it set up. Gave it a day to dry before pouring in the second half of the can and repeating the process. Set it out to dry for a while. Giving it the recommended sniff test before exposing it to gas. Even when i thought I couldn't smell the chemical, I gave it another day or so just to be safe.
Havent had any trouble. And no more rust in the carb bowls!