Cracking documentary, and nice to see a good amount of the last 617 Sqn Lancaster, which I was blocked from recovering back to the UK a few years back. Maybe with all the renewed interest I ought to try again - even if its just to stop the flow of parts showing up on ebay.
Shame the expert wasn't slightly more clued up; the turret examined wasn't the mid upper, its the shell of the FN5 front turret. Had the camera been poked in the back of the bomb bay, you can still see the Tallboy shackles.