More To See wrote:
In an ideal world, the wheelbase of a gasser should be no less than about 55 percent of the overall length of the rig. For your 38 foot (456 inch) rig the wheelbase should ideally be no less than about 250 inches. If, say, your wheelbase is 228 inches (50 percent) you might expect this to be contributing to the problems you are experiencing.
Here you go. Right on point. Unless you want to pay $1m for a MH you have to settle for weak designs. Or better wheel base & bad floor plans. Or better wheel base and bad cheap stuff inside MH. Or buy the MH & do what is required to get better handling.
I drove a Crown tandem 10 spd for a few years. When I took my MH out for a test drive I knew it wasn't over weight or needing alignment. It needed things cheapo manufacturers aen't adding. They have to stay competitive. After mods my MH doesn't drive like a Crown but it drives very well for $110k + $2k in mods. JMHO.