Steve, your Gnat looks tremendous - very well done ! (I'm thinking that it won't be too hard to see in that colour scheme). I'm afraid that you may have started something now .. As a hoarder of all things aeronautical, I have a copy of Silent Flight International complete with Alan Hulmes article and plan. In the article it suggests using a suitable Tucano canopy, reversed end for end to give the required shape. You can guess where this is heading .... please forgive the outright cheek in asking, but would I be able to source a canopy from you ? (If that's not possible / convenient, then I may have to stir my stumps and build that vacuum former that I've been promising myself ! 😉