The shower tap I’m looking at is a two control one: one for hot/cold and one for pressure/tub/shower.
The hot/cold works fine, but the other one is not gripping correctly. The only way the current handle hub sticks to the shaft is via the pointed end of the handle as it’s screwed into the hub.
This used to work, except now the pointed end of the handle has scored the brass of the shaft all the way around and so it can’t grip any more.
The picture shows the removed silver colored cover and the hole where the handle goes in. Below that is the brass on the shaft where the cover is supposed to go.
The brass fitting in the shaft has a tongue on it which I think should slot into the handle somewhere, but there is no place on the handle I have where it could fit.
What am I missing?