There is a sleeve inside the bushings that usually seizes to the bolt. Penetrating oil, heat, BFH and patience usually works but sometimes the torch and Sawz-All need to come out.
I'm over in Loveland and could help Monday afternoon, just today and tomorrow morning are no good.
"Stand your ground. Don't fire unless fired upon, but if they mean to have a war, let it begin here." -- Capt. John Parker