Wow, Darren, what a great project! From the bottom of my dark little heart, I thank you!
I haven't seen ANY of the DVDs yet, though I am contemplating purchasing at least one set (the one with the Julia/Tom Jennings storyline). That storyline included a notorious technical defect which appeared to originate in the master tape. I believe it happened in the episode where Julia comes stumbling in like a wino at the tail end of a bender babbling about "Tom." As I recall it, there's this shrill beep that lasts about 2 or 3 seconds at one point as the action is moving from the foyer into the drawing room. I wondered whether that scene got snipped in the interests of "tidying up" the DVDs. (sorry, I don't know the technical lingo)
I discussed this at one point with Richard Holt--there's a post from him buried in the archives about this scene, and how it originated in the master tape. I think he may have checked with somebody at MPI about it.
That happens to be one of my favorite episodes, and I'll be upset if I learn that it now circulates in a trimmed version.
G.