Disassembled the HS-1002 front spar assembly (HS-1002 front spar, HS-1007 spar doubler, HS-1013 front spar caps, and HS-1008 front spar attachment brackets), deburred all the holes with the 1″ EXL wheel on the die grinder, red scotch-brited the parts under the water hose, then primed with P60-G2.  Next I clecoed the parts back together in preparation for rivets.  The middle hole on the HS-1008R is just slightly under the 1.5D edge distance.  Should be 0.187″ and is 0.186-ish”.