My 2004 sportsman 400 is stuck in AWD, I have checked voltage down at the coil in the final drive. the power does cut out like it should. I have read that if the cage and rollers are bad it will cause it to hang up. I have noticed with the quad off and in low gear with the wheels raised I can turn each wheel forward but not backwards. If I reach in to the prop shaft and turn it back releasing the pressure off the front it the front wheels will rotate in both directions. with the front tires off the ground I started and drove the quad forward on my jack. the front wheels started turning right away as soon as the quad started moving forward with the selector for the awd in the off position. I just installed the final drive (bought off ebay) as the old one the coil had a broken wire off it. so I never had 4 wheel drive before. ebay seller says to his knowledge he never had any issues with the final drive. Your advise would be greatly appreciated before going through the work to remove the final drive to tear down for further inspection. I did inspect before assembling and cage looked Great!