69 Dart Hard to Start When Hot, Starts Fine Cold. Vapor Lock?

Yes I had a 1986 with the slant6
They were a bit of a mess right from dodge, it was a B250, so a 3/4 ton but it had the "light" front end which translates to the fact that I broke a lot of upper control arms I delivered a bulk route the the bigger of the 2 flyer delivery companies that meant loading the old girl with bags of flyers, on a busy week there were 4 layers and unlike ford and gms the b250 was a unit body with 5 bolt rims, the other van was a 1990 maxi van, it had the magnum v6 with a tbi, like isaid in another thread it didn't matter how cold it got I could always count on it to start right up, the 86 is the one that flooded ever single cold day, both of them got stuck if they even thought about snow
Oh and I was going to say they had a light and heavy front end, the upper control arms are different on the light the thickness the control arms were pressed out of was thinner so once I had depleted all the auto wreckers I had to get my bil to well them up so I could drive it to the scrap yard, and that's when the 1990 came into my life it had heavy front and the rear had 7 rather the the 4 in the 86, the a arms were thicker and they came from dodge with strengthening gussets welded in