its got a new fuel filter on and there is loads of pressure at the pipe that goes onto the metering head.
i checked the flap on the metering head and it was dirty so i cleaned it and it seems 2 move up really easy its a bit stiffer pushing it down though.
1 thing i noticed is when i had the metering head off i poured petrol into each of the 6 holes on the top that the fuel pipes go into and lifted the flap up and there was only 4 of them drained the fuel out of them and 2 where still full. dont know if thats normal but i thought all of them would of drained the same.