So I blew my head gasket. No biggie. While it is off I thought I would change out valve springs and some other things.
I rented a valve spring compressor from Autozone. They did not have one in stock to buy so I rented one of theirs. I got to my 3rd valve spring and realized that my difficulty to center the compressor was the 2 inner "feet" were not straight with each other. Upon further inspection, where these feet are bent downward and then connected to the threaded rod, there is a crack. Crack went most of the way through.
I took it back to Autozone and they refunded my money. In fact, their other rental was cracked too. I got some additional credit for my next purchase.
Picture for reference: