I have a few of those joysticks too. I actually kind of like them. I'm not currently using any of them in my cabinet, because I didn't have good luck using them with 4-way games. Instead, I have happ supers with ball tops set to 4 way.
The question I have is, does anyone know where to get 4 way restrictors for the nintendo sticks? All 4 of these sticks have 8 way restrictors attached, but you can see how a 4 way restrictor could be attached the the stick in lieu of the 8 way. I've done some searching and have come up empty.
OR, has anyone figured out a good way to use them in 8 way mode with 4 way games (such as pacman)

For anyone who's interested, my panel is a modified nintendo vs. unisystem panel (two players, with additional buttons, and adapted for happ sticks).
Thanks,
John