John,
Regarding recovery - mine was called off in 2008 at the 11th hour due to land access issues. As most of the permit documents are still sat here in my desk, I still intend to try again.
The Mid-upper was removed entirely to facilitate the fitting of a Wellington overload fuel tank.. necessary for range rather than operating out of Russia again. The only turret frame on site is the FN5 - though in the rest of the wreckage is a portion of fuselage containing the mid upper turret ring.
Regards,
Rich