Welcome to RCG Bryce. First, there is no such thing as "not so soft landings." LOL..they are crashes.
Here is the "official" CX2 thread :
You will get many more answers there. You didn't give us a lot to go on. But, I'm guessing if the servo is doing a lot of chattering on commands, it could be gonzo. Maybe it's just a matter of removing the servo arm and re-centering it to the horizontal position. Always put equal pressure on the servo arm while backing off the screw. See ya on the CX2 thread