There's a new word to add to the lexicon

and that word is "buggabosch''!!!

I have a bosch Pex sROS and it has always given me trouble with the pad coming adrift.

Mind you it does a good job for the brief period it works before the pad comes a drift.

I Took the thing apart with the idea of firing it up again following an attempt to repair
the thing. Turns out the screw hat holds the pad in place is a 7X1mm thread!!

Not common and not stocked anywhere here.

I managed to get the thread cleaned and now I have it screwed down nice and tightly with a spring washer.

Tomorrow I shall try the thing again.

Loctite is another option for holding the bolt/screw in place. It also stops bolts tightening up if vibration tends to turn them clockwise.