Should I be disappointed...

[TrikeKid]

Do you have the 57" F150's? How many leafs are in the pack?

I ran those for a LONG time.... they are super soft, and always flexed like a bastard for me. What does your shackle angle look like (front and back)???

Yes, 57", 4 leaf+overload.
Front shackle

Rear Shackle

(Sorry about the pics, flash on my camera doesn't work that well so I don't use it)