A couple of weeks ago I received some black/white PS-14-G buttons from Arcadeshop.de, and to my disappointment they just didn’t fit in my SFIV SE stick. I figured it was a small, bad production run, but today I received my order from Akihabarashop.jp, and the all blue and pink PS-14-G’s in that shipment had the same problem. They’re likely between 0.5 and 1 mm too wide in diameter, making sure they just won’t fit in a 30mm mounting hole. I have older pink, black/yellow, black/white and yellow PS-14-G’s that fit just fine in my SFIV SE.
The PS-14-G is my favourite button but I must warn y’all that you might receive some from the bad production run if you do order. Now, I’ve only tried it with my SFIV SE stick, so they might fit in my VSHG, but I don’t think there’s any reason to believe the SFIV SE isn’t up to spec.
I don’t know if this is the case with other buttons from Seimitsu, but I’d like to hear other people’s experiences with regards to this.