Originally Posted by
BlueGlowBoy
I think I had this problem, and it was because the shaft that goes through everything wasn't lined up properly (the hex on the shaft wasn't inside the hex on the bottom half of the saver.)
Pre-compress the spring, make sure that you line up the shaft properly, and it should go on, but it will take a little bit of effort.
I did compress the spring a few times but still pretty stiff. Finally got it by putting the servo saver on a desk & pushing down with the nutdriver.