I could use some help. My rear wheel is "rattling" while the axle is tight. I have tightened the axle and rear hub (even removed the cassette), but when I grab the wheel, I can shift it back and forth - almost like there is some clearance issue between the hub and the axle.
Any thoughts or ideas on what I should do? I've layered the axle with grease to help reduce some of the "play", but this doesn't feel like a sustainable solution.