Hey.. My magura Louise has lacked hold for a long time now.. And I have tried so many times to sort it and get it working with the same outcome every time. It never has held well since i got the bike really.. The only time it actually holds is when its pouring with rain.. Where then the back brake doesnt work so Im kinda in a Lose lose situation.. At one point I used to pour water on it before every ride but it would lose its hold gradually throughout the day. I have tried sanding the pads and rotor down and that hasnt worked either. Has anyone got any suggestions that may get my brake working to a good standard? Any sort of help is appreciated Thanks!