I'm looking at replacing my '67 Ford 4500 backhoe. I've found a couple of promising replacements. One is a '99 Case 580 SL and the other is am '87 Case 580 K. I'm open to suggestions. I've been reading about the Case being jumpy and potential for cracks in the cast iron boom. On the other hand, the guy at the repair shop said they are great and easy to work on, so I have no idea.