I need a new front master cylinder for my 1996 zx6. I fitted a second hand one a little while ago and replaced a leaking front brake line, did a full bleed and all was good but the lever has too much travel again. The pads and rotors are still good, and the lines are ok, it's not loosing fluid anywhere so I'm confident it's the master cylinder. I've looked on ebay for the generic sort of stuff but i'm very dubious about it.
So I'm after suggestions for a replacement, possibly off a later model to try and eradicate the typical kwaka brake problems.
Any useful and constructive suggestions greatly appreciated.