> > > And all those authentic machines out of the 80's and 90's with concave buttons? > > > > Only in Western countries. Convex buttons have been the norm in Asia for a long > time. > > Huh. > > You suppose the button collars are the same size, such that I could install > replacement buttons from Ultimarc or whatever?
Yes. Even the 2 (legs) that hold the button inside will fit (e.g. snap) into the 2 holes for the concave button holder barrel, hole thingy.
eta: Considering, of course, they're the same length.
eta2: I read somewhere that the 'convex' buttons are supposed to be more responsive. The first place I ever seen them was on a Virtua Fighter 3 machine. I don't find them to be comfortable -personally.