Continued work on forward H.S. spar. Dimpled HS-702 spars inboard holes and countersunk corresponding holes in HS-810 and HS-814 angle and splice. Took a while to get the micro-stop countersink tool setup and adjusted properly before feeling comfortable countersinking HS-810/814. Removed material from HS-0006 ribs to fit properly between HS-810 and HS-814 extensions.