LINWOOD, Pa. (May 10)—Foamex International Inc. May 9 said Lee C. Stewart, who joined the company April 2 as chief financial officer, resigned effective immediately. Carl E. Kraus, who had served as interim chief financial officer prior to Stewart's appointment, will again fill the position until a permanent replacement is named, the company said. When Stewart made the verbal commitment to join Foamex, months before he actually started with the foam maker, it was with the expectation that Jack Johnson would be president, a Foamex spokeswoman said. "At that point, the intention was to become private," she said. Johnson left the company in February when the buyers' group looking to purchase the company was not able to complete the deal, the spokeswoman said.