Hi guys bit of an update I’ve checked cleaned carb, reeds, exhaust I purchased a new coil a new plug, cap and Ht lead woodruff key and timing is ok I’ve now sent my stator and cdi unit to Bradford ignitions in Cornwall they specialise in beta techno electronics and many others but they do list this make and model on Thair website (motoplat) will let you know what they say is wrong with my Elecs they have the equipment and knowledge to bench test these.