Today my rear brake (HS33 05, Water bleed) started playing up
At first the piston in the lever body got stuck so I fixed that by spraying it with GT85 and a new bleed
Once I had finished bleeding i pumped the brake a few times and the piston in the cylinder with the bleed bolt had stuck right the way out but was still functioning the other staying normal
I then sprayed it with GT85 and it went back to normal
A few hours later it started doing the same thing, bleeding isn't helping and now the piston in the lever body is retracting very slowly, could there be a leak?
Any one know whats wrong/saggest anything to fix this?
Cheers