I know from experience that having a walker break is a nighmare. We had 3 go bad at one time. It took all day with 3 guys going to put them in. This was in rice harvest. We were running a stripper head too!!! So after the beans were finished, we noticed that the shiny new walkers were cracking in the same place that the old ones broke in. So we welded them up with the mig, painted the new welds, and sent her to ole Mexico. As we were loading it on the truck to haul it away, she wouldn't turn off either. Just kept running so we had to choke her down. That combine was a nightmare. And sad to say, but the 9750 was even worse. It was a $100 to $300 a day machine just in parts alone. Not counting the 300 gallons of fuel it burned a day......