Having been fiddling with this over the recent weeks, still getting my head around it. Have ordered a canopy, but no delivery date yet. Tried to find somebody in Australia to make one, but the two I found said it would probably take at least 2 goes to make a usable one, at about AUD1500 each go. So their estimate will cost the same as a Todd's Texas Canopy from Aerocanopy. Game over.
Used the router table to trim all the frame blocks to 2.25" high, and returned to the fuselage.