[HELP] PS2 Controller + Dolphin + Donkey Kong Country Returns

[Emugodtor]

UPDATE: I have configured some okay-ish controls, but still they are not perfect and can't figure out how-to perfect them. HELP is still needed!
And I am stuck at this part: (10:25)
https://youtu.be/PYuvzaSsk0I?t=625
I can't do that as fast as seen in the video... I tap that action's key as fast as possible, but it doesn't work...