My 400 CX loader was binding on the front bumper and would not set down in place properly. It took several attempts to get it on and off to make the loader set in place. I assume both loaders are made the same, but I'm only guessing. I only have 19 hours on my tractor and I've never attempted to remove it by myself. You might check the slots that set into the front bumper to make sure it's not in a bind. Just a thought.