I've noticed for some time now that the vane doesn't seem to rotate as freely as it should, so I pulled it down after ~4 years of not being touched. Holy crap, the thing was stiff as a board. I see now why it took 6-7 mph to move it, cause it did. Took out the CRC QD cleaner and gave it a good bath, problem solved! The vane literally now moves before the cups will even spin (they got the bath too, but really didn't seem to need it). If your anny hasn't been serviced in a while, perhaps it's due, mine sure was.