I was doing my T.C. drop today on my 96 zj, I was spraying the bolts with penetrating oil and noticed one of the cross member bolts was already loose. When I went to tighten the bolt, the nut was turning on the inside of the uni-body. Is there any solutions to this problem other than drilling a hole in the floor just above this problem nut so I can remove it, and install the new nut and bolt. The other 3 nuts are OK...Need any advice