They're in!! The problem was me. My old man came over and had them both in within five minutes. Damned if I can figure out what I did wrong, because he stuck them in the channels the same way I did, but they slid in for him.
Now I've got a worse problem, but that's for a different post, and I have to do some research first.
Thanks, Czechman! Like you, my truck has fought me every step. The only parts that went on easily were the bumpers.
