Daughter visit :) short day. I capped the auxiliary firewall passthrough because I won't be using it before my first flight. For the cap, I primed and finished painted (with Lycoming high temp engine paint) a 3/4" copper cap and secured it with the remainder of the SafeAir firewall passthrough glass wrap and SS screw clamps. Next, I adjusted the vertical adjustment hanger on the exhaust mufflers for maximum cowling clearance. I also installed the forward vents. With the vents installed, I can finish the insulation of the upper L/R forward fuselage.