Using Import Pads on a PAL SNES
I can't remember where I first saw this, but occasionally you'll find that some third party or official USA and Japanese pads don't work on a PAL SNES. Very nice of Nintendo to lockout not only games, but pads also!
Anyway, the fix is easy and you may as well do it at the same time as doing any other mod on your PAL console. Simply link up the points shown. PAL SNES pads will still work on your console after doing this, so there's nothing to lose.