Trvs on all but the hall, lounge and kitchen
As long as I don't have to cut pipes I can handle a full valve change. Couple and spanners and some ptfe tape.
Might help as I have air in the system despite bleeding the furthest rad and pump. Think it's playing havoc with my boiler and the auto air vent ain't helping. I still hear trickling water from the boiler. Just realised the bloody thing sometimes stops and cycles, hopefully due to air lock.