The fact that it will not size out means that even if the chatter wasn't there the bullet would have the same problem, it would be too small. This is not an excuse but just an observation. What I do see here is the fact that you bought a mold from a company and remachined it and THEN told them it had a problem and even sent pictures of the MODIFIED mold and the company still offers to replace it!!!!! Say what you will about Lee but would NOE or any of the other high end companies do that for you? Not likely.