Sammy it's always difficult to diagnose over the internet... but I'm assuming you're transfering the buttons over from the existing fascia? When I changed my headunit and changed the fascia for a piano black one, I remember having to unscrew the pcb board and take it all apart then re-assemble into to the new fascia. Is that what you're doing and they're still not fitting? That link also looks like a cheap aftermarket part? Maybe if you're doing as I did, then the part is the problem, not the buttons?