I cleco'd and match drilled the rear bearing hinge brackets to the rear spar and bolted it up with the supplied Hardware (AN3-5A bolts, AN960-10 Washer & AN365-1032 nut), which called for 20-25 inch-lbs. of torque.
During the installation I got two fasteners set properly, only after stripping the threads on one nut and completely shearing the bolt on another. Wasn't using much torque either... I will order four more fastener sets and replace all four together.