No rebuild kits out there, unfortunately. Brembo no longer makes them available. Mighty-vac on the master usually does it for mine and/or tying the lever back overnight. Though it seems to be a recurring problem. OE master is not cheap!2013 Multistrada 1200s GT. Front brake is weak the first pull or two. Gets firm after that, until it's needed again.
Bled the line. Didn't help.
Any rebuild kits out there, or should I replace front master cylinder?