Awww, sorry Mel' didn't mean to upset anyone by that? I know that whenever I need to ask techy stuff, I refer to them that know more about cleaning. In this case, SHMBO or a person of the female gender. Us men only get it dirty, we don't know how to put things like that to rights. Sorry!
On the cleaning mac hines, we have a Vax. Might try an inconspicuous part, see how it goes.
TerryE.