and turned down my pump setting for 2 to 1.
This has stopped all the gurgling and sloshing noises when the heating is turned on and also the 2 radiators that used to go cold at the top due to air entering the system stay hot all the way up now.
So I am very pleased about that.
I do get about 1 drip of water from the overflow about every 3 minutes when the heating is on though.
I would much rather the slow drip than the radiators going cold and making noises.