For the past couple of months, I've been using this method that I came about on my own and I'm sure you already know it. Instead of inserting my pairs by ru'r' or something of the sort when I only have the center, I'll do r'frf' which gives me a two edge case. Also with some two edge cases I can s the same and get a 4 edge case. If anyone else does this or knows about the help or harm, can you tell me? I figure its a good thing so I don't have to learn 7 hard OLLs. But if anyone knows of some unseen danger that could potentially mess me up, it'd be nice if you told me