I'm aware that one of the symptoms of the broken plastic washers in a GEMS ABS modulator is a 'clicky' brake pedal. Now for years my brake pedal squeaked whenever I applied the brakes but a few years ago that stopped and was replaced with a 'clicky' feel. As the braking performance hadn't changed, I put that down to a bit of wear on the pivot between the pedal and the pushrod rather than anything more serious.

Last weekend I drove to Amsterdam and back and experienced strange behaviour. I filled up with LPG in Belgium, then drove to Calais and the first time I applied the brakes the pedal went down much further than normal but coming off the pedal and re-applying the brakes, all was back to normal. Considering I'd just driven 120 miles at a steady 70-75mph without touching the brakes at all, this suggests to me that maybe the O rings inside the modulator are starting to weep slightly. I'm never going to be able to replicate the problem in this country (driving 20 miles without touching the brakes is considered a good run), so could just leave it but I think a modulator replacement is on the cards in the near future.