I have a craftsman LT 1000 automatic model 917.272460, it quit pulling. I checked key ways in wheels and they are ok, I jacked it up and pulled the wheels off and the axles turn slowly. the axle on the left slides out while turning, and I can grab it and it will move outward a little bit. is it possible a clip or whatever holds the axle in has come off? i am no mechanic,any help is appreciated. tia