I wanted something bigger so I took a Loc IV and put an extension on it using a payload bay. That added 11 inches. I also redesigned the fins just because and besides, it helps get the margin down closer to '2' (whether or not that makes a difference?). Does anyone have anything to offer? I want to stay with the 29mm, G80-7T if possible. I am not certified so can't go bigger right now anyway. See attached Rocksim. I am still learning that program so there are probably some mistakes there.