Got the same replacement. For a year, the old wheel began to die, clicking the wheel to the left clearly works somewhere only in 50% of the positions of the wheel relative to its axis, in other cases it seems to collapse, and you have to scroll it so that it stands up straight again. In general, I imagine it as a figure eight on a bicycle wheel when it makes a revolution. Personally, with a big hand, I never learned how to instantly hit all 12 keys, only on 7 I bound hotkeys that do not forgive mistakes in the game, the rest are auxiliary. My wife took trust with a socket of 9 buttons to feel it - it seems that all the buttons are groped on it perfectly. But I’ll still leave the g600 for myself, because I don’t want to change the overall quality for 2 buttons