I too have an X-52 Pro and had the same problem at first, once I discovered that the trimmer was more trouble than it's worth. My solution:
Get a couple of small zip-ties, wrap them around 2 coils of the centering spring and zip them down tight. This may take some experimenting to get the right feel for your flying style, just play around with it a bit.
The end result is a lighter feel on the joystick, without it hopping when you are really needing that forward cyclic, it dramatically improved my controllability with the X52 Pro. Hope that helps!