Quote: (Originally Posted by
londonsean69)

Why??
I used to be a printmaker/printer (lithography, mainly) so have been exposed to all kinds of nasty solvents over the years, for quite a number of years. Am rather keen to avoid more and, as you mentioned, am worried about accidentally contaminating the valves etc.
Edit - just a few minutes ago had a recommendation (on another forum) to use Goo Gone, so I'll give that a try first.
Goo Gone - Goo Gone Home Quote: (Originally Posted by
londonsean69)

Plus the fumes on some of the stronger ones can be, erm, interesting

Yes, rather
