Well, picked this game up after some time of not playing--got to a disappearing block puzzle... I had forgotten how to dash in this game, so I was going nuts trying to figure it out.
I dunno, L or R is a much better button for Dash in a Megaman game (especially when A and B are taken for shoot and jump). Thanks to ZX, I now will press L when I want dash. Or in a Megaman X game, something similar to the "X" button or something.
Double tapping right or left to get through a disappearing block seems a little much.
Though keep in mind, I've only rarely been able to do a Ryu style fire ball in various fighting games. For some reason, I just have these issues with using a D-pad like this >.>