Paula -
I'm not entirely sure which bolt you are referring to, but your first step is to check it against the other three (one more in the front bed, two in the rear bed). The main bolt in the slide is not supposed to be tightened.
Commodor47 took some photos of the bolt I am talking about, and put them in one of his albums. Try this
http://www.trailmanorowners.com/foru...php?albumid=66
Of course, if this is not the bolt you are talking about, ignore all this.
Bill