have you had an oil analysis done yetIJ I would think that that would be the first step to take as it would show you what is wearing, how much carbon is in your oil and how often you need to be changing fluid and filter. As for overhauling the engine don't let someone bs you about quality oem parts to rebuild it. I sell engine rebuild parts everyday and can pretty well tell you who makes what. Mahle builds a lot of Sandp sets for genuine Cummins, who in turn supplies Case. Anyone who believes Case, John Deere, Agco or any other OEM manufacturer builds their own wearing parts such as pistons, liners, rings, gaskets, or valves needs to take a look at the worn out parts that they are replacing and find the product manufacturing n's and codes stamped and molded into these parts. Aftermarket parts can be every bit as good as oem parts providing quality control has done their job. I have yet to see a rod out the side of the block on a recently overhauled engine to be parts failure. It has always been mechanic error. My advice to you is talk to your mechanic. look to see if he has the proper repair manuals for torques, procedures and tools to do the job right the first time. I have worked the selling end of nationwide parts sales for 5 years and sell between 5,000 to 15,000 dollars worth of parts per day and have seen a lot of problems arrise from these 3 things alone. So check your oil, check your mechanic and check your parts and you will be just fine. Good luck.