I finished drilling all of the spar caps for both spars to #30 today. I couldn't wait any longer and decided to do just a quick stitching together of the right main spar. Everything went together beautifully. Now I just need to drill the caps to the proper size holes for their rivets. After riveting, I'll install the hat spacers and rib angles, and flange the lightening hole. I'm looking at spar construction as a two-step process. The first step is to attach the caps and angles to the spars. The second phase is to attach the stiffeners and angles.