Drussel, Unfortunately there is probably more than changing rings if that is the problem. You need a "character analysis" of your cylinders that you may not be able to perform yourself. By that "we" (taking collective liberty here) mean the cylinders must be checked by a pro with proper insruments for taper, round,height and cracks. In this throw away society we have you may find you cannot do the old school fix of e.g., honing or boring .010" over as the parts are not available, the factory wanting to sell you (perhaps) a short block . This may not be bad for you if the rest of the tractor is worth it. This I do not know. Although I have a 24 Intek with about 700 hours it only smokes on sart up and just a little making me think valve seal/guides. This blabber may motivate the professional dudes to add from their knowledge. Good luck . I am depressed Mr Carscw thinks our tractors must die at 700 hours. I have grown almost fond of mine. :shocked: