If you search for tigermoth mods, you will reap vast rewards......that being said, don't worry about having 40 degrees down throw. You won't need it unless you plan on trying outside loops (very bad idea with this plane). The top of the cabane struts glues right to the top of the crease, not the sides. Make a very shallow incision the size of the strut in the foam at the crease and insert the strut and glue to get a better bond. god luck, you'll have 'er flying in no time!