Now we are ready to join the forward to the aft fuselage half.
The small glue tabs in back of the center sections are too small and thus too weak to support the full fuselage especially at this phase before the upper , lower fairings and the wings are glued on.
so
I inserted and glued four wood toothpicks into the round frames and then glued it all together.
Looks straight ( I am surprised a bit given the length of over 80 cm )
Isaac