Hey CrateCruncher, how did the rest of the build go if you finished it? I've got two YS 45 rear exhaust's laying around and I'm thinking about building the Duellist MKII off of the plans. I'm interested in making it fast and find the Profili idea a great one to thin out the airfoil a little. I'm somewhta worried about the tail strength as the fuse gets pretty skinny in the back. I'm sure other Duellist fans would like to see some pics of the advanced stages of the build. Thanks!