Kijiji, eBay, and Craigslist dishes for you to take a look at

Two Dishes, Georgia, South of Macon bidding at $75:
http://www.publicsurplus.com/sms/auction/view?auc=1434657
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Might not be warped. Could be a lighting - camera angle thing. Only a string test would confirm. If they have the printed factory alignment instructions, I know that would be a nicety that another member may find interesting.