Have you faced hard to press buttons on your G-Shock? This seems to be a problem more common among older G-Shock models, as CASIO's later models have perfected the module design and interfacing with the casings. Only few exceptions, like the early release of the GW-5000 had some complaints about the buttons being very stiff. Also the GW-9010 Mudman is notorious for very hard to press buttons, mainly because of the thick button covers integrated into the bezel.
I've got a few vintage G-Shock watches where some buttons are difficult to press. Sometimes it's the adjust/upper-left button (because that's already recessed) and sometimes it's other buttons. I'm thinking that what this may require is to bend outward the module contact point that is touched by the tab/prong when the pusher makes contact. Or is this something more about an issue with the pusher spring becoming extra stiff? Maybe it makes better sense to change out the problem buttons entirely?
Has anyone here faced this problem and found a good solution?