Hi, Robert, yes, the bulkhead's contour doesn't match the rear fuselage's shape and makes alignment difficult. A lot of sanding followed, too, after mating them together. There's the problem, too, of the glove vane area being too thick and the wing seal near near the pivot having a large gap
Prepared a thin sanding stick to reach the pivot. Needed to shave off a little to allow it to close more when I thin down the glove vane area. In hindsight I should have done this before I glued the rear fuselage shells together, when the pivot was easier to reach at.
What makes it difficult is that there is another rod that's in the way. It originates from lower fuselage half and goes into the pivot tube. So it was bit tricky to reach around the pivot towards the back and shave off the amount that I needed. I couldn't think of any tool that would allow me to do this.
After that I started cutting a section of the glove vane area, so that the fuselage halves could be clamped closer together and hopefully brige the gap by an appreciable amount.
Checked often that I was cutting straight. Holding the fuselage with just your hands and without a jig makes it easy to go off-course.
Made the same cut on the other side.