I broke my arcade stick

I have a mayflash modded with sanwa buttons and stick. I accidentally dropped it and now the buttons aren't responsive at all unless I push them while the controller is flipped upside down. My question is if its a problem with the buttons or the pcb. Obviously, I'm leaning towards buttons, but have a little bit of doubt because I heard sanwa parts are long lasting.

Another question: Are seimetsu buttons more durable and less sensative than sanwa buttons?

PS: I tried to troubleshoot the pcb by manually completing the circuit (I put a piece of tin foil between the contacts on the buttons). It works, but I can't really be sure because the buttons only have problems when I have to tap really fast. Obviously, I can't simulate this using tin foil.

Thanks!