It's been a little while since the last update, so here's what's been happening.  I started building the U-joint - this will take almost all of the weight of the cockpit so it's quite important I get it right!  I've also been fighting my way through a maelstrom of paperwork trying to work out how I'm going to attach the U-joint to the cockpit frame, and to the base itself.  I am yet to have a revelation!