i bought a world hemi block from ray barton. rear seal kept leaking. after doing some inspection, i found out the groove for the rear seal was machined too wide & wasn't centered to the crank. called chrysler, they wanted the block back & shipped me a new one. as stated by other members here, u could have it corrected $$, or try for another. that would be ur choice. good luck. stay safe, seeya.