Looking at options to help keep sway down, I look at the safe_t_plus shocks. Wonder if any one has tried a semi-truck shock. About same size at $40 to $80 each.
1st alignment this should check the steering out for tie rod ends and bell crank, then weight and air pressure in tires, then if an older unit bushings and spring bushings, and the Safe-T-Plus is always a good investment. Now I don't know about a truck shock but do they work horizontal? Then you can start throwing real money at the MH if this doesn't cure the problem in after market enhancements.