Continued working on the cowlings:
1. Completed riveting the firewall Skybolt base fixtures to their plates.
2. Put on the top cowl. Pushed and turned each cowl fastener to engage their pins, then tightened them down like a screw until they were flush with the cowl, thereby properly adjusting the depth of the fixtures. Unfastened each one with a quick "push and turn."
3. Removed the top cowl. Removed the depth-setting lock pin on each fastener fixture. Turned each one with a flat-blade screw driver to the 1 & 7 o'clock position until they clicked, setting the depth of each fastener. Replaced the top cowl and quarter-turned each fastener to check the fit. The top cowl looks great, and I'm very happy with it! (It looks like it will just need some trimming to give the proper gaps for paint.)
4. Removed the top cowl, then removed the Skybolt "screw" from the bottom-aft hole on each side.
5. Lifted the lower cowl into position with the help of a strap. Clecoed the lower cowl to the prop spacer jig. Clecoed the top and bottom cowls together inside the inlet holes. I made sure the lower cowl was over top of the upper cowl.
6. Tightened the strap until the lower cowl was snugly against the fuselage.
7. Measured forward 1-15/16" from the blue line on the side of the fuselage and began marking a vertical cut line on the lower cowl.