How did this happen to my pushrods?

I have seen pushrods with a twisted looking surface to the steel, but the discoloration from friction heat is what I was questioning.

It would be interesting to mesure them and see if metal actually moved.
I'd wager that thier lengths vary somewhat.

Ahh yes, I noticed that too. Comp has a set of heat treated, one piece pushrods in the length I need. I think I'll order a set of those with my new springs soon. Thanks for the advice