I have a 120 bass accordion with the very top button on the bass closest to the bellows (D) that is halfway down, and looks like it is slightly bent forward. I can still press the button down and it comes back up to its original 1/2 up position, and it doesn't play a sound when not pressed. Is this an easy fix? Do I try to bend the button so it is straight and comes back up all the way like all the other 119 buttons? When I look at the bass mechanism with the bass plate removed, it is really hard to fit something back there to try to bend it back in place. Should I try to fix it (if possible), or just leave it? No other button on the bass section is having this issue at all.