The car is now running sweet as a nut !!! Took the jets out of the carbs and put them in Hexane in a Sonic Bath which I borrowed from work. Cleaned them up a treat. Set the timing roughly (haven't got the timing gun back from my dad yet), then balanced the carbs and set the mixtures with a Colourtune kit. Revs smoothly and sounds fantastic, even with the blown exhaust. Need to sort the exhaust and do it properly. Once that's done.....tyres then an MOT !!!!