Im putting a G45 on my DP Extra. I wanted to be sure I had good hardware. Im using Rocket city hardware the 8-32 screw size not sure of the part number. What I did was this: I drilled a hole in each surface from the bottom. I then screwed the screw in almost to the top surface. Before screwing it in, I shot 30 minute epoxy into the hole. I then held the surfaces to dry with the screw or horn facing downward. This should allow the epoxy to stay right at screw point of entry and make stronger. I then tightend down the black washer or triangular piece from the rocket city hard ware with epoxy after clearing an opening in the ultracote for adhesion. Im hoping this will be sufficient, as the horns seem to be very strong this way. Having drilled as close to the hingeline that I could, the hole is thru the leading edge of the balsa, and with the added epoxy, it should be strong enough. I have had thoughts though to make a small round hole in the top of surface, and thread in a dowl piece for reinforcement. ??? Man that sounds like more work! The way I look at it, if I used the included hardware, the four screws only go into the wood a small amount. The way I have it now, I have one large screw that goes to the top of the surface, and is epoxied in, with a big black washer to keep it all tight as well......