okay ive had this hub for a few months and its been starting to act up lately. since day 1, the driver system was always kind of tight, as in the cranks wont spin enough to even crank flip. this isnt a big deal, but the rough or tight driver system has gotten worse. the driver is hard to move freely, and when you spin the wheel, it has so much drag that it slows very quickly. the drag is horrible and it sucks because my bike is slow and sluggish. not only that, its hard to pedal and sometimes the hub will make a screeching noise. what can i do to fix any of this? ive rebuilt the thing, wiped down every part, greased it, and nothing. still doing it. please help. if i could get the wheel to spin freely with little to no drag that would be awesome, crankflips are a plus too!