sometimes my fingers shake for no reason >_>
seriously though, I don't know what you guys are talking about. My robot fingers that I bought are perfectly fine.
I will admit that sometimes when I'm trying to go for an airdash, it'll take me 5 tries to get it right. This is most likely due to the fact that I pull my finger back to early, before I push right on the pad, so I end up doing this quite a few times in succesion.
But yeah, other then a twitchy thumb, using steroids has given me no side effects whatsoever >_>