Well try it like this:
Press Right CTRL + Return, this brings up an overview of how the cyclic is trimmed. I just press the trimmer and hold it, then push the cyclic forward a bit and release the trimmer button, while putting the cyclic back to normal. That changed the trimming to a bit forward. If all worked well, you can see it on the TrimOverview window.
Conclusion: hold the Trimmer, Trim and release the button / key while putting your cyclic to normal...
If you have a well trimmed hovering state, you can switch on auto-hover without any problems.
I hope I could help you...All the best,
Moreno