BVC500 sent me lenses for a Fujimi Daytona I'd lost, carefully packaged and "toot sweet" - asked nothing in return. And beeRS from England offered to do the same. Thanks a million!
Thanks very much guys. OK I'll try the denatured alcohol. (And look up "kablooie"!) Pete, I don't use brake fluid any more because it makes the plastic brittle. Delicate areas can then be easily broken.