Now that i come to think of it DCM aka methylene chloride aka dichloromethane would prob be the best solvent for cleaning RP, i reckon a bit of DCM say 40% with another solvent would work wonders. Im gonna give this a try.
But we know DCM reacts with alot of other substances
"Methylene chloride reacts with strong oxidizers, caustic substances, chemically active metals such as aluminum and magnesium powders, potassium, sodium, and concentrated nitric acid."
Does anyone know if DCM is safe with RP?