I sort of know one answer to this but anyway I'll ask to see if another idea comes up.
I replaced my bath and used the old taps but got a couple of washers in my last order from
I am using flexible tap connectors and I know that copper helps to stop the taps from loosening but I'm not propsing to change these . I can get the cold to tighten ok but the hot is causing a problem for some reason . . Should there be a washer of some sort on the underside of the bath between it and the backnut ( which is brass) . Might one here help .? Any other ideas appreciated
Stuart