Water leak at Pump Drain Seal

I removed the motor and pump assembly. I had to unplug the motor and drain solenoid, remove inlet and drain hose, and loosed the recirculate hose and water return to pump clamps. I also had to remove the ground wire on the motor. I removed the solenoid and bracket. I had to cut the push nut off with diagonal cutting pliers. The seal removed easily. I buffed the shaft with emery paper and reassembled the drain solenoid. The push nut took a little effort to seat in place. I reassembled in reverse order. i still have a leak, only not as bad. I am sure the shaft is loose in the seal.