How do you straighten a k-frame off the car? Is it worth it?

Cuda416 said
As already stated, the mounting surfaces are all supposed to be on the same plane. Run a straight edge across/between them.

Yep, that's what I understood. A straight edge on each leg might say if it is twisted. If each side appears to be on the same plane, then it would make sense that the two sides aren't and it is twisted.