Of course there's always Sears (havent had problems with mine, but I use the jack pad in the jack port), I think Pep Boys can get Lincoln, but otherwise I haven't seen any local to ATL.
These were posted a while back if you want to mail order:
http://www.shopquip.com/acdk13hlq.htm
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=47246
HTH,