Corrected entry: Lister only screws Kryten's head around once to get it on, but he had to do it several times in "Tikka To Ride" to get it on.
Corrected entry: Kryten remarks that he and Able are both "2X4C" models, when Kryten is actually a "2X4B" model.
Correction: Kryten is referred to at various points as a "Series III," a "2000 Series," and a "2X4B Model." Likely these various references are to different parts of him, (Processor, Hard Drive, etc.) so it's possible for him to contain both a 2X4B and a 2X4C model part and simply refer to himself as that particular model in some situations.
Corrected entry: If Able was addicted to Otrazone, and he was running out, why would he offer some of his remaining supply to Kryten?
Correction: He knew nothing about Kryten at that stage, and might have thought he was a fellow addict with supplies of Otrazone available to him. Making friends with him with a (small) nip might have made sense to him at the time.
Corrected entry: All of Kryten's spare heads are supposed to have different personalities to the original Kryten head, but they all have the same one in this episode.
Correction: The personality depends upon the RAM chip that is in the head. Lister says that the RAM chip remains intact and therefore, they swap RAM chips when they change heads.
Correction: The head is already on Kryten's shoulders at the start of the scene. Lister would have already screwed it on to that point, we only see him turn the head on the rest of the way.
Dwarf