Keep trying, it's pretty simple.
Also something I discovered yesterday by mistake.
It is possible to end 5B 2B 2C 6[C] 5C -> j.B(2) j.C djc j.B(2) j.C with 22B -> 22C, This nets about 50 less damage than either 2C or 66 214C ender, not very useful but it's cool.
The shin-nin combo can still be ended with 2C which nets about 5600 damage on VSion, but the timing is just stricter.
66 214C land 3C into TK 214 A/B okizime seems to be the new big thing, so that is worth practicing as well.