Right! I spoke to the Triumph mechanic today (after breaking down in the wet again, see thread in the lounge (Good Grief!). He said both the starting and the cutting out in the wet thing are caused by the coils getting wet. He suggested cleaning the connections up on the coils and coating them in silicone sealant. Am gonna have a go at this tomorrow I think.
And does anyone know where I can get a d tool for the carbs and an 18 mm thin walled spark plug socket in the UK? I have searched for ages and can't find them anywhere in the UK.