Previously, multiple hole locations were drilled in the mixer pivot shaft XNS-C02-05 ($84.75) due to fitting the XNS-C02-06 drive fitting ($63.25) upside down. Turned thick 1/2" x 12" shim stock from AS to fit inside the pivot shaft with approx 1/4" on each end. Plan is to weld ends and tack through previous holes to secure support to shaft, then drill new hole for #1 taper pin.