Yes, there is supposed to be four large buttons at the bottom of the module.
It is impossible to find the original part, but i found one that is the same physical size that will work and that is the one pictured.
I will try to get these done as soon as possible, but there are many people involved and everything should sync.
My only trouble right now is to find someone that can paint the panels in the correct way, but i do have the right paint mixed up so should not be to much trouble.
My friend is working on a new pcb as well, the old one from Tommy was not 100% correct, but this one will be.
I know he is building a testmodule right now with this pcb so i will wait to see how it turns out.