This problem is driving me crazy. For the complete description go to this post in the Brake Time forum: http://forums.mtbr.com/brake-time/tried-many-fixes-but-old-magura-louise-still-rub-516879.html#post5672613
Thought i'd post a link here, since this is my home on mtbr.
Mtbr's 2016 Winter Biking GearReviews and Roundups
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