So I have a 95 7.3. Glow plug relay went bad last year. I replaced it and it went bad again so I checked my glow plugs and had a few that were bad. From there I replaced all 8 glow plugs with factory plugs and one valve cover gasket form the parts store. Now the relay keeps going bad and I have 2 glow plugs bad and the relays kept going bad after a few weeks I been by passing the relay with a screw driver but that's not a fix... Any ideas. . . factory relay?