I think I've stumbled on to the reality of the clean hit from Grand Viper. I've tried on most of the cast and this seems to work consistently. I say consistently meaning about 80 - 90 percent success rate. I think the times are missed were due to execution mistakes but after meeting the criteria I've observed I never missed it.
I haven't trained my eyes to use it in juggles as that's a bit more difficult. So here's what I got.
If you combo into GV using something like K-2HS-->GV or just do bare bones GV, you mash and look at the opponent. Mash until you see your opponent suddenly pops into the air slightly. If you don't see this happen then evidently you keep mashing and you get a clean hit as a result. I've been able to nail this almost everytime and from different ranges.
Oftentimes, what happens when you're too far when starting it, there may be no opportunity for the clean hit. So do those GVs as close as possible.
Knock yourselves out.
