In case anyone is interested. I ran across it while searching ebay for assorted parts and a tiller for my L.
http://cgi.ebay.com/Gravely-18-G-Ri...ultDomain_0&hash=item3cb0ce659d#ht_500wt_1154
http://cgi.ebay.com/Gravely-18-G-Ri...ultDomain_0&hash=item3cb0ce659d#ht_500wt_1154