Not Steve, but I have some insight. I would try to ride in the truck before they are removed. My experience has been that the HFS springs ride really great, but they arn't stiff enough to hold up to wheeling or camping. I have the newer "heavier duty" springs on the rear now. The first springs CCOT sent me fell almost 2" in the first 2 weeks on my truck. THe heavy duty ones on there now have fallen about 1.5" in 4 months. I have only carried a load 3 or 4 times in that time period. I have talked to several folks with the HFS kits that have saging in the back with zero to no "heavy duty" type use. I think CCOT defines "heavy duty" differently than most cruiserheads.
HTH,
Greg