Hi all I'm new here so bear with me. I was trying to remove my passenger seat in my 99 Ford Ranger, and I ran into a snag. I got all the bolts out except one, its the one closest too the door on the back. When I look under the truck I see maybe a rubber piece of some kind
. I couldn't loosen the rubber piece, does anyone know what it is and why it's hindering my seat removal?? Please help.