Heres an alpha 40 (I think). My Tower 60 turned out nice. I located the dural gears where they needed to go. I cut the balsa sheeting from the fuse bottom exposing the rear bulkhead and plywood side edges. I built a 1/4" ply panel from 1/8" mahogony ply with blind nuts installed and epoxied it to the fuse frame flush with the bottom. Its waiting to be covered. For the front gear, i simply removed the battery/rec. tray and epoxied an 1/8" ply doubler that extends to the sides to the existing 1/8" ply bottom and installed blind nuts. If that wont hold I dont know what will.