Put in the easier of the nose rib rivets which involved a little contortion but only the first one had to be replaced. My little stabiliser holding modification worked well to improve visibility of where I was working. Next step is to do the ones close into the leading edge, a little less room to work but should still go OK. The brace is cut at 45 degrees with a couple of scraps of ply and screwed to the cradles. As the aerofoil is symmetrical you can just lift out the assembly and turn it over to work on the other side rivets.