I finished sanding the fuselage near the Main Gear extrusion bolts, and the Firewall junction with the CS (Center Section) Spar both top & bottom.  I then sanded the top & bottom longerons to match the Firewall outline.

I checked that the fuselage was level and straight.  I also double-checked the firewall positioning and confirmed that it was level, straight and square.

My last action of the evening was finding and marking the fuselage centerline.