Peter, in Canmore, Alberta, Canada is assembling one our kits. This one is a 14". Here's what Peter has to say so far (Note: Looking greater Peter):
Here's the assembled rocker box. The sides weren't quite square after I put them together so I lined up one of the sides to the bottom board, screwed in that side and used my large clamps to square up the other sides with the bottom board. I then put the rest of the screws in and all is now nice and square.