Shortly after I bought my vectrix, I noticed that the left (rear) brake pull was softer than the right (front). Inspection showed no leaks at the handle or the caliper, and fliud levels were fine. Eventually I flushed the brake fluid with fresh DOT 4, no improvement. Over time, the brake got softer and softer, so last weekend I tried flushing again, but this time I ended up with no rear brake action whatsoever, and confirmed that there are no leaks.
It's looking like I need a new left master cylinder, and maybe a set of replacement washers for the banjo bolts. Does anyone know of a good off-the-shelf replacement, or do I need to go to Vectrix? Anyone know what the Vectrix part would cost?
I just remembered I have a spare FRONT brake (lever to caliper) from ebay, I'll have to check how it is mounted but I don't think I can use its master.