I'm back on my Deck Project so I only have part time effort on the 601. I began to install the Seat Back Support and related parts and progress is good in this area. I also made and installed the foreward Seat Base's which include an access hole (large one) that provides access to the Wing Spar Bolts. This work is a lot of big and small parts that have to be made then fitted to each other to complete the requied design strength. This is, therefore, a significant piece of progress. The work for this is over a couple of days and summarized with complete time recorded for the effort. I actually, really enjoy stopping the assembly and making a group of parts like this. The Nut-plates are also installed in the access area - which can be clearly seen in the photo in all 4 corners.
Seat Back suport
Seat Back closer view
Forward base of Seat with Access cover for Wing Bolts