For the guys that did not like towing with the bumps in contact I'm curious how much pressure were you running?
I tow a 8000lb trailer using the SVC adjustable bump kit. I started out ~150psi in an attempt to get the truck nice and level and that was uber-stiff, esp after it heats up (it's a fixed volume so the pressure rises real quick!) I've worked my way down to around 40-50psi and the truck rides awesome.
This is on stock leaf springs, but I'm also using a WD hitch. My strike pad is about 2" away from the axle so it chews up the road noise without touching the strike. Then if I hit a substantial g-out or bump the air-bumps ramp right up and keep everything in check.
I'm assuming you guys are using nitrogen also? I've just been charging mine with a mountain bike shock pump (lol.) I need to get a tank as I believe this would alleviate the heat expansion/stiffness I've experienced..
