I checked mine for that 32% idea. I thought to use when the truck or MH is at GVWR and also at RGAWR so the front is as light as it is allowed to be, what do you get?
1991 Ford MH - 30%, 2003 Chev truck--34%
I did it with actual scaled weights for the MH when we are over the rear rating and GVWR and got 29%.
Actual Chev truck with camper, truck just under GVWR and under axle ratings-40%
Actual Chev truck with 5er we had (under all ratings) - 41%
Handling the MH does feel different where there seems to be more "play" in steering than in the truck or cars. It goes straight hands off, but the steering seems "loose" or however to describe it. Just have to get used to it. Can't say I like it that way.
If course the MH is a dually and the truck not, so the idea of having 1/3 up front and six tires does not work with the truck and four tires. the weights are unequal front and back but so are the psi on the LT tires so it all comes out ok for tire weightings.