mira 88

Plumber came round to fix leak (not from shower head, but from central spindle) using the Mira 88 service pack (936.12). This fixed the leak, but the shower now behaves in a most curious fashion. With the mixer knob in the COLD position hot water flows but at a low rate. Advancing the knob...

I am trying to dismantle a Mira 88 shower control to attempt to fix the hot/cold temperature knob which has been stuck in one position (hot) for far too long. When I look at the documentation or YouTube video it seems that the temperature spindle should be removable, but mine's stuck firmly and...