Thanks everyone and I wonder if cessna152towser’s response says a great deal about the forum in the present day. My impression is that there are mainly a limited number of long-term contributors who seem to have survived all these years by ensuring that they have never been in any way controversial. Nothing wrong with that of course but the only question to ask is why have so many fallen away. Were their contributions lacking in any value? Did they become bored with a somewhat repetitive subject?