Tonight I re-installed the windscreen and marked its edge on the upper firewall strap. Removed the windscreen.
Along the centerline, I measured the distance to the centerline from the aft edge of the strap. Since the cowl has not been trimmed yet along that edge, I will install the cowl, then measure the known distance to the centerline and mark on the cowl. I will then trim the cowl.
I also marked the distance for the Southco holes with an exact line center to the hole.
