I got it free! My neighbor came over and held a 3lb sledge against the #7 and we broke the cardinal sin of smacking two hammers together while I whacked it with a 5lb sledge. I put a 3 1/2" hole saw upside down against the piston to somewhat distribute the weight to the edges. Now at this point am I obligated to strip it down and take it to the machine shop or can I just hone the cylinders and re-ring? Thanks again all!