First thing I did today was pull the last 3 rivets by hand that I couldn't get to with the rivet gun. I defered drilling for the two pushrod supports until I actually install the pushrod. That way I can be sure it's exactly right. I'm going to do the lowered seat. So that concludes F21 .. .finally. I did page F20 .. got together all the parts for the turtledeck and made the ones I needed to. I then started working on F19 by starting the splice channel assembly that goes down the top at the seam.