We had two kids and a dog with us but the biggest issue was the 1 ton Chevy was a 1973 that had sat for 9 years when I got it and the box truck was a mid 80s that had sat for 4 years when I got it. In other words POS vehicles that cost $1000 between the two of them. We used CB’s to communicate and my handle ended up being Mr Chugs because the truck I was driving would chug up the hills and I’d end up dropping down to 2nd gear on some and doing 20-30mph by the to of the hill.(that and I like beer)
If I’d have gone through a weigh station, they wouldn’t have let me drive out of there. We walked across tool boxes to get to the bed in the back. 35 foot 5th wheel and you couldn’t see the floor due to all the stuff, mostly tools.
I made sure brakes and steering were good but the fuel tanks were both rusty inside. I had 3 carbs and at some point in the day, I’d swap one truck’s carb, usually the Chevy and every night, I’d clean up a carb to have for tomorrow’s needed swap.
Dang! Old fuel tanks, yeah, that’s a problem. A friend of mine had that problem back in the 90’s, driving a rusty 65(?) chevy pickup back and forth to work. The aftermarket inline filter would plug after a while, but it was the in cab tank dripping a few drops a day that had to be dealt with. His temporary 20 gallon tank (off of an old grain truck) was bolted in the bed. Iirc, it was temporary for about three years.