I hope someone can help me out. My current setup is this:

Calmini SAS Spring Pack
Stock Shackles
Bilstein 5150's (BF5-A196-H1 stiffer valving)

This has been fine for about a month now. This past weekend I loaded up my X with 5 adults, a large dog, and about 100lbs in the cargo area. This has been the most weight the X has seen with the new setup. Well going down the road it felt like I was riding on the bump stops. I got out and here is what I saw.



The strange thing was once everyone got out of the truck the suspension stayed that low. I had to lift up the rear bumper by hand and then it went back to normal height. I only had this new pack on for little over a month. Should the pack flatten out this much so soon?

What should I do to beef up the rear suspension? Should I add some leafs from my stock pack or longer shackles? If so which leafs would be better to use (shorter or longer leafs?). I still have my stock spring pack which has the Calmini AAL's in my basement.

Thanks in advance for any input.