inc those 1763 onwards ? - these are not on the Manx Museum film nor on your site as far as I can see - it was the accidental discovery that the Museum had some unfilmed BT's that prompted the work. I also give the witnesses as I found elsewhere that sometimes these can be very useful.
(btw Nigel I'm afraid several of the links on your site return 404 errors (? did you rename some pages ? eg forward becoming introdution ?) - also as I suggest to many who use framed page sets try using google to locate the info and then try navigating from the google referenced page)