The only track I could find on youtube from the 1975 tour was the encore "Sunshine of your love" alas no tron. I saw him at Manchester University in the early 70's, I already had my mellotron obession then so I'm sure he didn't use one then. I think most of what he played was from "Songs for a Taylor" and "Harmony Row".
I saw Rory with Taste around 1970, one of the best live performances I have ever seen, I remember that I was deaf for 24 hours after, ah those were the days.
Mark