The Barefoot V1 buttons, that I love, will not fit on the new controller pedals as Morningstar have just switched to slightly larger, flat topped buttons. I understand this only effects the very recent pedals as the Barefoot V1 buttons do fit an MC3 I bought 2 months ago and another MC6 bought earlier this year. I have ordered some of the Solutek ones mentioned by James in the first post. Fingers crossed. Cheers.
I got mine earlier this year, so I also have the old smaller switches (the new ones look nice!).
The old switches measure to 8.5mm, which matches the V2 Barefoot Buttons. As far as the diameter of the top of the button, I was afraid the regular ones (28.5mm) would be too close together, so I was considering the Mini ones (19mm). The ones in your picture appear to be comfortably distanced from each other, and actually look like the regular diameter tops - is that right? Do you ever feel like they’re too close together?
The inside of the Mooer toppers are a bit too wide for the mc6 switches (2021 year model)
I had some metal tape for Heater/AC that I trimmed and wrapped the top sides of the switches to make them a tad wider. It worked well on the shrooms. They are on snugly. I think all the Mooer toppers are the same inner diameter.