I can't screw back in the drain plugs to my heater. I put vaseline on them but I cant get them to screw in. Anyone else have this problem? The plugs are one quarter inch brass. Are these regular screws that can be bought at a hardware store? I called Leslies and they have quarter inch brass plugs but the girl doesn't know if they are just for Teledyne Heaters or if they fit all heaters.
