Hello the problem I'm having is with my radiators maybe needing bled the livingroom and two bedrooms are roasting ( all have stats on the bottom right corner ) but the hall and two toilets ( with no stat controllers ) are only lukewarm at the top but roasting at the bottom it looks like there is a bleeding valve on the top right corner with a white cap around it which spins but the valve itself looks as though it needs a slotted driver turned in it any help would be much appreciated. Also my baby girl has been turning the lock shield valve on bottom left of radiator so don't know if that has anything to do with it
