is there a brake master cylinder that will replace the original on the 650 of another bike, the front brake is shite on a mates and on inspection the bottom bracket that holds the lever is snapped, looked on the bay etc but they are like hens teeth, cheers Mike

Dont worry about it, Brakes only slow ya down :eusa_shifty: I find the end of the garage is quite useful for coming to a stop at the end of a ride.

The mountings are something most of us never look at. One thing I have found on a regular basis, is a loose speedo cable nut at the front wheel hub.

Nothing specific, but since it's a separate unit from the control cluster, just find one that fits well enough for comfortable use and adjust to preferred settings.