2011 550. Has 7300 miles on it. Started to notice lately that the engine braking works fine at high speeds but as it slows down it is like the clutch disengaged and goes into a neutral. Not sure if this is a belt issue, clutch issue, one way bearing, etc…any experience? I am still running the original belt and have zero slipping issue. If I tap the throttle, the clutch reengages and works like normal. Not overly concerned but want to nip it before it becomes a problem!