Thanks Bill, that's really usefull; I looked everywhere for one of these. By the way, things have severely slowed down over the last couple of weeks. I've had a terrible job stabilising the paint. I had a local paint supplier mix me some single pack epoxy for brush painting which gave a supurb finish. unfortunately they failed to tell me this was designed as a single top coat and took about 7 - 10 days to fully dry. So, when I applied the second coat two days later patches wrinkled up all over the place. I have been rubbing down and primer etching bits for the last couple of weeks and am almost there. Hopefully I will be able to apply the top coat again in the not to distant.