[Diesel-Gypsy]

Kent, what hitch do you have on the truck, and is there an air-pin type hitch on the MS ?

It sounds like something is "shaking" or vibrating the forward area of the frame.

The screws that you say came loose again, are they into wood?
It might be a good idea to use a simple locking agent on the threads, like caulking, or even caulk the screw heads.
That might keep the screws from vibrating loose.

McGuyver time..

Rick