PS. OCDP, I see you’re a relatively new member to the forum so welcome and don’t be put off by some posters comments. If you wish to revisit a subject then please do so as far as I’m concerned. If everyone’s had their say and the subject is exhausted, you won’t get any replies. The fact we’ve gone to almost p. 3 shows its still of interest and new perspectives on this important subject are I think always welcome.