I removed one specific hit from the "basic" nezu FRKZ combo and it became very easy with only 300 less damage. (couldn't do the regular one at all on makoto. I think it's char specific)
In the weekend I'll work on his advanced FRKZ combo, and see if I can do it or maybe find an easier variation of it as well.
When I get more concrete results I'll start posting the notations, including of a staple corner 2 seal combo.