Trial fitting of horizontal stabilizer to vertical stabilizer. Cut down top of vertical stab to provide about 2 mm gap all around underside of horizontal (T-tail) stab when bolted together with special/"magic" 12mm hex-head screw. Had to shim up fasteming bolt with 1-2 washers in bottom of horizontal stab bushin/housing to avoid interference with unthreaded portion of 12mm screw.
Initial fitting of AL T-plate indicates the holes in the vertical stab may have to be "lowered" a millimeter or so.
