Super clean is just a strong citrus based cleaner with amonia in it. It is not like carb cleaner at all. You must rinse it off with water, unlike carb cleaner.
I do not think anything will fix that discoloration except repainting the painted parts. Powder coat or even rattle can will work with varying levels of quality.
If you have no other damage you are very fortunate. I would worry about ALL of my electronics like the HES.....anything in an epoxy sealed canister like resistors or capacitor stuff.
it is easier to ask for forgiveness than permission