Good Grief! I have just come back after a trip away from the electric net and though I'd logged into just helicopters by mistake! Gents, there are an awful lot of quite respectable contributors to this site who appear to me, to be caught up in an never ending competition to be the 'most correct'. It's almost Christmas, why don't you all take a few days off, read what you have all actually written and come back after you have had a nice lie down!