Hi.. I have been using Liquin for years and have just came up with a dilemma. The message below has been sent to Winsor Newton Tech Help US several times with no response. I just sent it to Tech Help UK, no word yet.. Can you help?

"Hello,
I hope you can help. I have been using Liquin since the late 1980's and have not had any problems with yellowing or delamination.
The problem I have now.. is that I started a painting (I paint in very smooth built
up layers, using Liquin lightly as my only medium throughout) and a piece that I
had to put aside for about 6 months I want to come back in and finish.
Is there a barrier layer (such as retouch varnish) that I should use? Should I try
and wet-sand it? I am concerned about the delamination issue and really dont want
to mess up the piece.
I appreciate any information that you could give me on this."

Anyway.. any response would be great!
Linda L

I have copied your entire post and sent it to the technical people in the UK.

W&N seems not to have a good response time on queries through their website.

Mark Gottsegen