I used a punch to make a countersink I just hamered it inot the hole to tork the metal downward. Then I driled holes (on top of the screw holes) just wide enough and deep enough for the "counter sink" to sit flush with the mount. I think it migh not be possible to fit it with blind nuts, the wood is just too thick and deep. Also I recomend doing the set-up with 4 washers (each) under the two rear mounting screws. It flies great like this, with no pitch variance with throttle up.