Door Jamb Switch

[liftlawssuck]

I just installed a new door jamb switch and the door doesn't close all the way. The door bottoms the switch out before closing all the way. The distance between the face of the hex portion of the nut and the tip of the plunger is too long. Anyone run into this before? I need to go look at some trucks behind my friends farm and see what they have for switches but we're in a snowstorm right now. The truck never had switches in it so I can't compare the old ones. Any thoughts? Thanks