I had the Downey 2.5"s also...
After 8 months on my daily driver, with no problems, I made an 8 hr trip back from Conn to NY with a 7M motor and all accessories in the back. (I figure, maybe 500-600lbs?).
This was the first time I ever loaded the truck down with the springs in...
Got home, parked the truckfor a couple days with motor in it.
Couple days after unloading it, yup...I was driving and heard the CLANG also....Half the drivers spring was gone....
Called Downey....NO WARRANTY!
Guess I was lucky (sort of), to get them to sell me just one spring.
By the time it got to my door, it was only about $25 cheaper than buying a new PAIR!!... :xdevil:
Ever since I swapped in the new spring, my drivers side leans about 1.5" low, too...