I agree, with regret, that this forum has indeed become pointless. It is dominated by a few people who are rude and unhelpful, and I think we know who they are. Some members have been genuinely helpful (thanks Daz Jones) and some spout such uninformed, self-opinionated rubbish (ChesterBen, Deeps) that the forum is unwelcoming and useless.
I am sorry to say so but it is incontestibly true.
To the few members who have helped me over the years, thank you. i will take no further part in this forum, partly because the usual suspects mouth off in a semi-literate way with half truths, claiming to be experts, but mostly because I really cannot be bothered any more.
Kind regards to those who have genuinely helped me over the years, no comment to those who have insulted me. Feel free to respond to this post but I won't be reading it.