What a silly job this is . . . !!!

 
Yesterday I spoke of the unwinding saga to find the leak in our ensuite shower.
 
Judging by the damp patch on the ceiling (I rarely look up there, makes my neck ache) this leak has been around for a while.  I’ve only managed to reproduce it once yesterday morning.  Since then, no matter what combination of water/shower direction I use, it has not come back.
 
I have put my endoscope into the cavity but nothing to see but a wet joist.  There is always a chance that the timing between the shower (using and testing) and the drip prove to be a coincidence – now that WOULD be silly.
 
To be continued . . .