I broke that single bolt the runs through the mount. I have no idea how and I have no idea how long it's been broken. Any ideas on how it broke. It's sheared clean about halfway down and there's no telling where the other end of it is. My gas gauge is going haywire on my 90 Jimmy. When it gets down to half, it bounces back and forth between half and full. When it gets down to 3/8's, it stops bouncing and works normally. Did I mess something up when I replaced the pump, or what? I'm stumped and it's getting annoying.