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:whistle: I do know a few good ones . . . . There is a difference between a plumber and a boiler engineer . . . .

Turn them all up/down until you are happy with the temperature in each room. Works for us, it's traditionally a rotary valve system, or 'tap' works a ****ing treat. . . .pretty much since it was installed . . . .before I was born probably! We have a combi boiler too. Nobodies fried or frozen in...