I dont know if anyone needs this nor cares, but this is a lil vid i made when i started to first practice RC funky kicks shows timing and inputs. The first 5 tries i tired to Negative edge and thats NOT the way togo 6th try was double tapping and it worked perfectly. If you guys need any help with this let me know. Also practicing roll cancel hadouken will help you with this move. It helped me immensly.
[media=youtube]JKbAJXXPl3o&fmt=18[/media]