Not knowing what kind of MH you have it's hard to offer anything that might help you. Very first thing I did was load up for travel - water, fuel, food , people, and had it weighed. Then adjusted tire PSI accordingly based on the tire manufacturers chart. Second was to add a good TPMS. Third was CHF - but that is only applicable on gassers. After that it handled rather nicely for a gasser. I ended up doing other things, more soundproofing under the doghouse, chasing down rattles, adding a macerator, some decent audio equipment - things like that. One expensive thing but well worth it was ditch the dolly and set up for flat towing. A lot of "improvements" are specific to the coach and what you like. But there are general things you can do to improve ride, comfort and safety.