heliduck ....
tell that Chief Engineer about a product called "prepsol" which will remove all silicon/wax type product from surfaces to allow painting adhesive use etc .... he should have known $$$!!! about that its commonly used by auto body/paint shops .... Mr sheen causes no problems if used sparingly... never had a problem getting "Proseal" to adhere to a prepsol cleaned surface!
In PNG we routinly flew Hu 500s with pilot doors off so as to see where we were going.... not that we knew where we were mind ... but we could see ... sort of .....
DO NOT fly in (heavy) rain with self adhesive blade erosion tape fitted ... it can be way too exciting!!!