There was probably a technical issue with the Sultans kit because it was a movable set up that was only ever used for one song in the show.
I'm still unsure about Guy's diary entry about Fade To Black. It could have been that the kit was actually being recorded but because my brushes were very much quieter than the regular playing that it just didn't register on the tape machine. I can't think if any reason to mute the drums in the middle of a show, unless we played Fade To Black immediately after Sultans (which is a possibility, I can't remember).
Again, from MY memory, I played brushes (like the album) on Fade To Black, not crosstick and hi-hat. Only IIRC.
I can't imagine many 'technical issues' occurring with Paul Franklin. Chris White? Maybe, but as I say, with sax mics picking up the monitors and amps on stage, it would be hard to slide audio from one show to another, but not impossible.