F55 is not really possible.
Honestly The Fs7 on a Ronin-m/mx it is a very bad fit. The larger
Ronin is really what you should be using.
It CAN fit with our PRO Dovetail and counterweights and you can see it
in the begining montage of the tutorial video
takes 3 or 4 2″ weights and the TILT range is really restricted.
So if all you need to do is follow people as they walk it should work
but you wont have much tilt range.
So it CAN work……but your really fitting a square peg in a round hole.
You will need