Home / Forums / Vintage Melodicas / Yamaha (Gakki) 25 (vintage) / Reply To: Yamaha (Gakki) 25 (vintage) Reply To: Yamaha (Gakki) 25 (vintage) January 6, 2015 at 3:09 pm #3698 DarenKeymaster Great info and pics Alan, thanks for the posts! Is there any chance of some pics of the spring arrangement? Also, do you think the harder key pads have any effect on air-tightness? I wonder if the pads and gasket have hardened over time…