Anyone know if it's possible, and if so how, to adjust the vibration sensor sensitivity on the System 3?

That's 'System 3', i.e. the one with a round and an oval button on the remote, as opposed to the 'Evo' types, which have a round and a triangle button on the remote.

I've been all over the black box and even (very carefully) had the lid off but there seems to be no obvious adjuster anywhere...

Had an occasion last week where it kept triggering the alarm you see. I had to set it to Ferry mode so the tilt was disabled. I reckon it may have been a combination of an odd angle the bike was parked-up at, and a windy day.

I believe it is possible but you need to get the dealer that installed it to do this.

Ok thanks Ian I'll make enquiries... ::