After a long time my shifterpaddles were not really registrering every shift It turned out to be the metal "spring" plate that hold the shifter paddles that get a bit tired, metal fatigue it's called. The paddles do not come back so strong & tight anymore. If you let go of the paddles to suddenly they bounce back a little even. Giving you the double shift or no shift at all. Here is the fix, or upgrade.. I put 2 little coilsprings in to push the paddles back. The coilsprings i got from an old RC model i had lying around, but any good hardware store probably has some too.. Luckely they are yellow, so easy to see on the photos. I drilled one hole where the spring must come out. One smaller hole to secure the spring with a small screw. The resistance is a bit higher, even feels better than when i just bought it. Also releasing the paddles to sudden is no problem anymore. Even if the flaps of your G25 / G27 still work i could recommend this little mod. Feels much more real and sturdy.