Right then, Just wondered if any of you guys could help me? Yesterday, I had my rear Magura working fine, then I started playing with the little grub screw to pull the lever closer to the bars, just to see what it was like, then un-did it. Becuase I didn't like it. And the brake felt shit. It felt really spongey, even with my Booster, and completely different to before. I've had many attempts to bleed it, I've cleaned the cylinders out with WD40, and flushed all the black crap out, and built it all up and bled it. Still spongey. I've repeated this about 3 times now. The cylinders weren't responding very quickly at first, but they seem ok now. But it still feels spongey. Is it fooked? If so, will it be just a new pair of cylinders I'll be needing? Or a whole new brake? It's water bled by the way, But I might change that to oil, if water is the reason this has happened. I don't know exactly how old the brake is, as I bought it second hand off eBay. And It was oil bled before. I'm guessing that they're quite old though... It's annoying, missed a lovely days riding faffing around with my brake. Got my new bubblegum pads ont front, and they're lovely and grabby! Just can't ride without a rear brake. Help