All of David Steier's / Rolan Kraps Gun Cart Plans have been moved to www.lulu.com 

Just search for "Gun Cart Plans"

http://www.lulu.com/browse/search.php?search_forum=-1&search_cat=2&show_results=topics&return_chars=200&search_keywords=&keys=&header_search=true&sitesearch=lulu.com&q=&fSearch=Gun+Cart+Plans&fSearchFamily=2