I installed the floorboards again to redo the rear tunnel
section. Used an angle finder to determine the correct angle for the rear
section of the tunnel. Once cut I fit the section in place and determined it
needed some trimming to make it perfect.
After trimming I set about to determine the positions of the
lock plates that I had to install. Once the lock plates positions were determined,
I drilled and installed them.
At this point, I attached the right and left rear baggage
floors to the tunnel via the new lock plates to verify fit and finish. I
installed the assembly into the fuselage and determined the amount of trimming
to the front edge of the tunnel to mate up with the front baggage floor
assembly. I deliberately left the tunnel long so I could mate the two tunnel
sections.
Once trimmed, I reinstalled the rear baggage floor to verify
fit and finish. The front of the tunnel would not lay flat against the floor
because one of the rivets in a forward lock plate was interfering with a
fuselage crossmember. Once ground down it fit without touching.