In my posting on my inventory of two-part back-formed verbs, I tried to say clearly but politely that I was not proposing to create a complete inventory of the things, but only to give a representative sample of them. This has not stopped people from sending me more examples of this very common phenomenon, with the result that I’ve had an hour a day or so consumed by adding these examples. I’m beginning to feel hunted.
(I do welcome more examples of phenomena that I have few sightings of, but 2-p b-f verbs are not such a case.)
Please stop sending me more cases, even if you love them.
If anyone wants to maintain something like a complete inventory, I’m happy to share my files (not just the verb list, but information about sources and the like). And Ben Zimmer notes that you can find a whole pile of examples (I hate to think how many) by doing an advanced search in the OED on “back-formation”.