Heavy tongue weight - change from PP 3P?

Thanks for all the help John! Spent last hour reading about tire squirm. I am running my tires higher than I usually do. Last year I was running front around 65 psi and back around 70 psi when towing and 55-60 unloaded. Then I did a tire rotation and had a case of death whobble. This ended up in new dampener, tire rods and a few other things. Also got new tires (which probably was the culprit). I drove them home at whatever psi Ford installed them at (around 70-75 psi) and had no problems. Well I aired them down to my unloaded psi and had more shaking. Not death wobble but just not as smooth. Read some forums where people swore that Michelin tires needed to be aired up to 70+psi to stop death wobble. Did it and it helped. So since then I've run these tires at 70+.

I'll slowly play with the psi when towing. I'll hitch up sometime this and see what it's like.