Hey guys I'm almost finished building my gp arf stuka. But, the engine mount has given me some probs. First, the screws that came for the mount against the firewall, they're the right ones, but the screws that came for the engine to the mount are the same ones for the firewall, hence, too big. I had the luck of finding some other screws I had from spare, and they fit. But after drilling the holes, and I started tapping them, my tap broke inside the mount!!! :'(. It says on the manual that the engine's front thing (behind the spinner) should be 4 1/2 inches i think from the firewall, but with my Saito 91 its 5 3/4 or so. Also, the engine mount is positioned at a left downward 45 degrees, (diagonally down), and I have to cut the cowling to accept the engine, I'm thinking about making new holes on the firewall and installing new blind nuts so the engine's upside down, or with an angle where I dont have to cut the cowling. If someone has had this or these problems please let meknow and how u worked it out. I really apreciate it. Thanks