Aero City buttons question?

I'm trying to replace the buttons on my Aero City control panel. I bought the common Sanwa buttons and they don't fit. I original buttons have a little nub and the diameter is a little smaller? What the hell kinda buttons go on this control panel?

Thanks

Should be a tight fit.....

If it's too tight, consider milling out the holes a bit.

norton9478 said:

Should be a tight fit.....

If it's too tight, consider milling out the holes a bit.

Click to expand...

The button on the left are the ones that came with the control panel.


http://i138.photobucket.com/albums/q265/kage8/sanwa.jpg

The OBSN buttons I tried to replace them with cannot be forced into the control panel. It's weird, happ comp buttons BARELY fit in the holes.