Before Christmas a box arrived containing an additional 2,500 pop-rivets. Apparently the "early adopters" had reported that the original 10,000 rivets is insufficient. So early purchasers (and late adopters) got an early Christmas present.
When I opened it up, I found a replacement VS-1210 part. This is the piece that makes the Vertical Stabiliser hinge brackets. Apparently, some did not have adequate clearance to install the hinge bearing. So I had to redo the very first part of the assembly!
The bonus is four scrap parts that I can practice other things on.