We made yet more trial recordings at our 4th rehearsal. All the pieces we played depended on a very precise tempo or very precise tempo changes. There were wobbles, and uncertainties. But the process of discussing it did indeed produce improvements, and the 2nd take of Swimming Down the Stars was a good deal more together than the first one. (We were NOT impressed with the first take, see the postits below!)
As ever, there may be more than one way of playing a piece – the main thing is that we all do it the same way!