guy,s i,m soked but determined, i,m trying to pubh the pin but i don,t think its moving, when you say push the pin to the right, am i right in thinking you mean as you face the boiler your pushing the pin in which is from left where sited in boiler to the right????????????/ i have got boiler set like you said but i,m not convinced that i,m getting any movment in the pin.