FAQ re: sticking right and left (and top) buttons.

Making sure there is no tiny tab at the tip of the button is a start, though I carefully shave the tip of every left and right button before I send them.

I've found loosening the top left fascia screw 1/2 turn helps the best. Shaving the fascia may also help, but ultimately, it's the fascia binding with the button, not with the fascia.

And to think, if the molders had "packed out" the parts that extra bit to make the bottom button look perfect, they would be even a tighter fit. We struck a good, microscopic compromise between size and material shrinkage dimples.