Thanks for all the input. The WD system I have is the Pro Series Weight Distribution System w Friction Sway Control. It shows specs of 10,000 lbs GTW, 1,000 lbs TW. So I don't think it's my WD system not being beefy enough. Honestly, with what I see as the drop with and without the WD setup, I almost feel like the truck's suspension doesn't need the WD setup. My trailer has a dry weight of about 5000 lbs with a hitch weight of 610lbs. The suspension on the truck seems to handle the tongue weight without needing much distribution. Without the trailer attached, rear height is 38 3/4". With the trailer, but no WD, it's 37 3/8". Adding the WD setup doesn't change it from 37 3/8. But maybe I'm just ignorant as a newbie with a TT setup.
One other tidbit, the prior owner of the truck apparently used it for a fifth wheel. So given that fact, and there being 66000 miles on it, would it make sense that the OEM shocks are probably due to be replaced? I don't know what the life expectancy on OEM shocks are, especially if there was a fifth wheel pulled.
