That's a fantastic image Goran.
The narrow band really does bring out the detail around the keyhole.
Perhaps its just that its not a bright red/pink like standard RGB images those soft blues and greens are easier on the eye.
Do you have a crop of the central area you could post?
I have a the same problem effecting my images with my old JMI focuser.
It just cant handle the weight of my Atik 383 and filter wheel
.
My next purchase will definitely be a moonlight focuser.