I'm really late on this, but there's a solution to this issue. I use it all the time but when I drop it, I revert to another route for insurance. Sorry
@Lulu
Once you land the 1st 66K-K, you have to pay attention to how far they are off the ground. When you see their legs & torso come off the ground, you have to land 66K at the highest peak before you can land the rest of the sequence. It's not easy at 1st, but once you notice the timing of the bounce animation after the 1st one going into the 2nd 66K-K, it gets easier.It's going to take some time. It's a really good route because it's universal & it carries them across the screen. If you get them near the wall, you have the option to wall slam them with 6P6K as an ender with PP6P6K or just do PP6PK & play with your advantage. So it is a big deal to use, but you don't have to take this route. You can't delay the input either.