Rough riding F53 chasis.

I think they ALL ride like a battle wagon, but there are a few things you can do without much expense. First and foremost, if you have your tires inflated to max cold pressure and don't need to according to your weight, then by all means...let some air out. Next, you can change out shocks to a softer version. I've read that Monroe makes a fairly soft shock for the big chassis. I have Bilsteins on mine and they do ride pretty hard, but they also perform very well. Koni is supposed to improve the rode/handling as well...can't vouch for that either. You can add helper spring air bags to the suspension. I did, and whereas they helped a great deal with handling....they didn't do much to soften the rode any. You can also upgrade your driver's seat to a air suspension seat...that'll make the ride easier on you, but it still bangs the heck out of the rest of the coach.

Other than getting a diesel pusher...as you referenced, you have a great coach...but the gassers are apparently notorious for riding fairly hard.