I had actually mastered these back before the RC progressions got rearranged, but to be honest, I was still in the stage where I wanted to rush through everything. While I completed the mastery reps, I don't think my form was very good, never posted any videos, just said "eh probably good enough" and moved on. Now that I've matured, I'm making sure I do things the right way. Still a few steps left to go, but these are definitely better than my previous run through.