ok, today i also tried blocking up the cold start injector (mine doesn't work anyway)

so thats eliminated the possibility of that leaking n cocking it up.

i'm definately swinging towards the possibility of an air/vac leak as i swear i can hear a hissing when driving (cant hear nuffin over the top of the engine when you got the bonnet up tho

was thinkin about trying the long straw to the ear technique