Seimens surge voltage protector business was renamed or bought out by Epcos. They should have the spark gaps you need. http://www.epcos.com 800 689-3717 Same city as Seimens office, Iselin, New Jersey K5PRO -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com