Speculated a lot how to drill the main gear to get it straight and also get the holes perpendicular. Ended up using the fwd main gear support angle to steer three holes that I hand drilled 4-5 mm into the main legs, but upside down. Then I put it upside down under the fuselage and pre-drilled (marked) the rest of the holes. Then I took it in the drill press, and got perfectly perpendicular pilot holes. When I test-mounted, it fitted perfectly. Have to up-drill the holes for the AN5 bolts.