Oh I forgot to add that I used Joiners Mate 5 Min PU glue on the recommendation of a friend who had just completed covering his MR Hunter. This is a much better glue than Wudgrab PU glue normally used. The Joiners Mate is a low foaming thixotropic glue that does not drip. It has a slightly longer working time than the Wudgrab and is made by Geocell. Covering wings with Proskin is not for the faint hearted and it is easy to make a mess of it. It is vital to load the skin down firmly against the structure and to pin it in a few places to stop it sliding about.
John