Thanks for all the info chaps, I think I'd like to try making a wasp first later in the build, The most difficult bit is likely to be the under carriage with each wheel having a double wishbone and a shock so I could go for the wasps predecessor the Saunders Roe Scout which only had skids which would be easier to do, and I believe did serve briefly on the 81s, of course this could all be out of my skill level but if you don't make mistakes you don't make anything. Joe.