Magura HS33 Brake trouble.

[JLH85]

I'm looking for some info on some Magura HS33 brakes.
The piston on the drive side of the bike is really slow and moves only a fraction of the distance of the other.
I've re-bled them and holding one piston they both move really well.
Its only when trying to operate them together that there seems to be an issue.

Any help would be appreciated.
Thanks

 

[colinbow]

Re:

Needs to be in mountain bike chat section.

 

[JLH85]

Thank you.

 

[Lighty]

Sounds like the pistons need a clean. Various techniques, just use a damp earbud first before trying any other liquids