I pulled my rear axle so I could put the new rotor on it and now as I put the slightest pressure on the axle nut to tighten it down, the axle won't allow the sprocket/rotor to move at all. It locks it up. I left the chain adjust bolt loose thinking it was the chain adjustment being tight but nothing seems to allow the sprocket to turn except leaving the nut loose. The maintenance guide says to torque it to 146 ft lbs. I haven't even attempted to put alot of torque on the nut as not to screw something up. I'm stumped. Any ideas on how to fix this would be appreciated.