I tossed out the stock center 1/8 braces that are about useless and maqde up my own so they are just dihedral braces that go in two bays and are epoxyed to the spars, both main and rear Then I have the front brace added too that is also drilled and counter sunk for 1/4 X 20 screws. There is another block to be added. Then the center section is sheeted and planked. Look at all the room in that fuse and I already have two servos in there. This is a good size plane with lots of hand room.