Dang U-bolts!
all u bolts are mild steel
distorted housings are an installer fail
the flat oem ones are weaker than solid bar
different torque specs for different products
don't torq a round ubolt to the factory specs, use the ubolt spec and never crush a tube
trailer ubolts of proper load rating are fine replacements
most people way over torque them.
the locator bolt and saddle plate do all the work
dr