Every pair of Shimano levers I have has eventually developed a bit of play in the levers. In my XTR M980 levers this has recently happened, I assume from a sloppy brake bleed. It's a shame the bushings seem susceptible to degradation when exposed to mineral oil. I've googled around and not found an easy fix. I love these brakes, but would really be keen to find a solution to this worn bushing. 

Anyone have a solution or idea to test?