Have long ago decided to incorporate a Vance Atkinson style sump tank in the right rear seat, and these are my first active measures to implement this. I made a dummy drain valve and hardpoint from 1/4" ply and some air fittings. I was intending to drill a hole through the bottom then noticed Vance's drawing shows a sloping sight guage in front of the front bulkhead. I instantly decide to slope the whole forward bulkhead, and modify all the pre-cut parts to fit. I will not glass these yet, as all bits in contact with fuel will use EZ-Poxy, which I am not yet ready to play with.