Recent discussions on the Walker right angle gear boxes generated some questions in my mind. 1. My gearboxes have been noisy since new (700 hrs. on them now). Response from Walker was that was normal. In their testing, they found they could tighten the gear tolerances and make them quieter, but that resulted in them wearing out too quickly. 2. My gearboxes seem to have become too "sloppy". you can move the blades by hand in about a 6" arch back and forth before feeling any resistance in the gears. 3. Is there an easy rebuild for the gear boxes, and if so, what is the cost. Any comments from other Walker owners on the above issues would be appreciated.