Being the kind of guy I am, I saved all of the extra screws from both mounts in a bag, against future need. Unfortunately, fast-forward to earlier this month when I needed a screw and nut, I couldn't find the bag.
I emailed the customer service department at Cheetah Mounts and asked about getting a replacement hardware kit.
They only asked two questions: "What was the original Amazon order number so we send you the right kit?" and "Is your shipping address still...".
That's it. A few days later I had a complete hardware kit waiting for me, UPS Ground.
Now, that's customer service above and beyond the call of duty. I think we need one more TV mount... and I know whose I'm buying.