I am trying to confirm whether or not I have a mast staging problem. The free lift cylinder lifts to within 3/4" of full stroke, then the main lift cyls. start to lift. If lift operation is stopped within a foot or two of main lift extension, the inner rail will drop slowly and extend the free lift cyl. the rest of the way, but the forks don't move. Does this indicate a problem in the free lift cyl. or could this be normal due to cushioning valving inside the cyl. The main lift cyls. were both just rebuilt and there is nothing binding in the mast.