Match Drilled and deburred common holes on R-1004A and R-1004B.Edge deburred R-1005 Rudder Horn and Clecoed it to R-1004A/B.Match Drilled and deburred all common holes #30.Edge deburred R-1002 and clecoed R-1004 and R-1005 to it.Separated R-1007A's, smoothed and deburred edges and clecoed to assembly.My second mistake. I let the countersink wobble as I was drilling one of the R-1007A's and really fouled it up. Fabricated a replacement from the "Bolt Gauge" included in kit, THANKS VANS'S!