I have watched seies 3 now. Firstly, continuity, Dora has a new beige jacket, but the old one makes an appearance in 1 episode with the top right button present then not, then back. You are right, very different, tensions between Steve/Dora rise, as do tensions between Steve/Ron. There is frequent conflict over ethics/viability/charity/economy. I would hazard a guess that Dora is on the edge of deppression and definitely emotionally unstable, not uncommon with people with high ideals which she definitely has.She hates change, to the point of keeping Ron on, when in all truth, his work ethics and cavalier habit of smoking near hay or straw would have had him sacked on any farm I have worked on. Hating change can also be a veiled desire for emotional and personal stability, again, consistent with the idealistic Dora. I found myself torn between her commendable ideals and Steves sound business sense. It was great to see David Hemmings on screen and to have his proven directing skills too. How did I feel at the end? Unsure really. Steve and Dora are obviously emotionally close, but always it seems at odds with each other, well most of the time. He seems to agree with her ethics and morals, but always his pragmatic sense emerges. He seems oblivious to the attractions of Tina, played by the adorable yet tragic Lynne Frederick, and to Dora's jealousy, as he was with the blond girl in series 1. I enjoyed all 3 series, and will study them in more depth as I get to know them more. 1 thing I am sure of though, there is far more depth of character/plot than in a lot of more modern dramas, and more time to develop both.