This is a follow up from another thread I started. I wanted to focus more on the leaf pack in this one. Here is an excerpt:
"I did hear back from ALL PRO regarding their 3" leaf pack. They say 1" of sag per 400 pounds of weight on the tongue. They also stated that this is equal to factory specs (non-TSB). Anyone know different?? "
If so, then at 1200 pounds, the truck should be nearly riding on the bump stops, right? Which is not good.