Asking this question of those who have installed the PH Aviation flap actuator in their -14/-14A. I just started riveting together the angles & shims to the modified Van's flap motor mounting brackets. Before going further, I got to wondering about how I would be riveting the assemblies to the flap motor channel. I don't see any way that I can buck any rivets under the angles. If I disassemble the angles & shims from the brackets, I could possible even squeeze the rivets that mount the brackets to the channel. However, as it is right now with the assemblies together, I can just barely get my thinnest bucking bar between the shop heads of the rivets on the two brackets. No way I can buck a rivet there. How have you overcome this issue?