Clecoed the skeleton of the horizontal together and started fitting the skins and drilling out the holes to a #40 drill to suit rivets. The plans are starting to look like english and not some long lost egyptian language. They really do get clearer the longer you stare at them. Must be doing something right as it fits together and is starting to look like an aeroplane part. I will dismantle everything and deburr and clean up the holes and edges on all parts ready for corrosion proof and assemble for the final time.