Not sure how fast my pony is, but here is a pretty good article describing why the GOP was so intent on getting the memos out there.
https://slate.com/news-and-politics/...planation.html
The tl,dr version is that Fox News reported a while ago that Comey leaked four memos. Since the GOP knew he had written seven memos, and four were classified, it meant at least one of the leaked memos had to be classified. But the reality is that the memo that was leaked, which was unclassified, was four pages, and not that four memos were leaked.
So the GOP is pretty much relying on what is ultimately flawed reporting from FOX to try and indict Comey. Which tells you all you need to know about the level of intelligence of your average congressional rep.