Thank you for your reply. Having done some more research, yes the flash hotshoe pins where modified secretly, allegedly !! I unfortunately have the pre mod round headed pins. Which for a princely sum they will replace, not that I would expect it done for free as allegedly it being a design fault. The flash was part of camera items inherited and came in an unopened box. Will have to take it on the chin and look for something,non CANON as a replacement. Regards
