We have been looking for a 9600-9610 to purchase. Some of them have cracks in the sides just above the rear straw walker crank. What causes this? Can it be fixed? Or do we need to continue running as fast as we can when we see these problems. Also, as I do not have much experiance in what to be looking out for in these combines, (or any other for that matter) any, and all help would be greatly appreciated. I know with all the combine knowledge on this site, someone will know what I am talking about.