You can interchange Asahi Seiko coin door parts on Coin Controls doors but only as complete assemblies. To put an Asahi Seiko reject button in a Coin Controls door, you're gonna have to replace the entry bezel, reject button, and entry trough halves at the same time (all must be Asahi Seiko parts to do this). The reason being that even though the reject buttons look the same, they aren't. The reject post sticking out of the button is in a slightly different position than on the Coin Controls and would bind.