With the happy help of a few of my grandchildren I fairly quickly stitched together the port and starboard #1 and #2 hull panels.  Only then did I discover that the stitching was apparently way too tight to accommodate the forward and aft bulkheads.  I am now I. The process of loosening  the stitches and trying to shape the angles of the hull panels to the bottom and sides of the bulkheads.  It is proving to be a long and frustrating process with a lot of trial and error and I'm wondering if there are any tricks in getting this step accomplished?