A: Hi There,

If your shower is the Mira 88 then you need to replace the knobs with the Mira 88 ones.

The part comes as the knob pack now and the part number you require is provided in the link.

http://www.showerdoc.com/shower-spares/mira/MIRA-PARENT-75-Mira-88---post-1984

It might be worth serving the internals of the valve with the seal kit as its probalby never been done.

Part Numbers
937.84 Knob pack
936.12 Seal Kit

Regards

The Shower Doctor
Answered 162 days ago | Anonymous