I have an older Warn 8274 and at the moment it's grounded through the frame. I want to add a ground cable by attaching it to one of the screws which mounts the motor. Problem is both of the screws are a bit rusted and in trying to free them the heads have begun to strip. So in order to mount up the cable I'll have to grind off the heads and replace the screws. Once I've freed the screws, or what's left of them, I can go to the local bolt store for replacements, but if I have the specs on the screws I can get replacements ahead of time. So, anyone know the length, diameter, and thread pitch of these things?