1. Began fitting the engine control cables, to see what needs to be modified. As I expected, the 1" circular hole in the gear tower specified by Vans for the throttle quadrant cables is absurdly wrong. There's simply no way three cables can pass through the quadrant support angle and bend to fit through a 1" hole less than an inch away from the angle. So I got out the nibbling tool and files and made the hole into a triangle that's big enough to accommodate the three cables.