I went to Deaver Off-road Suspension in Santa Ana yesterday and had them add an additional leaf to the Carli Progressive XXHD leaf springs. Took almost 7 hours (usually 4) due to the Rossmonster camper on the back and them having a little less space to work with accordingly.
I am quite happy with the result. The rear of the truck went up by about 1 inch. While the truck was not sagging before, it was not level either. Now it is almost 100% level and I am almost at travel weight (half tank of fuel, half tank of water - otherwise almost fully loaded).
The ride quality is a tiny little bit "rougher" compared to before,
but not in a bad way. Driving at highway speeds, I noticed less sway and overall better handling in curves or when changing lanes.
I am quite happy with the outcome based on driving 50 miles with it yesterday. It does not add to GVWR of course, but knowing that the Carli XXHD Progressive leaf springs are rated for 3500 lbs it is definitely something that improves the weight capacity for the truck (compared to the 3500 lbs).
Next thing is an anti-rust treatment with some of the Eastwood stuff on areas where I see some surface rust.
The Deaver team did a fantastic job. The shop may look underwhelming, but don't be fooled - there is a hard-working team with good people at work.
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