Other than sand blasting I just learned to live with the shades of orange where it baked on. Pressure washer didn't really help, maybe some light steel wool or a scotchbrite but I wasn't going to that do that after every ride
Well, I’m selling one of the bikes and I want to get the stains off of all the metal before listing it. If I were keeping it I wouldn’t care much about it. I’ll try some engine cleaner and see what happens