I've just put my Flyer on the marketplace for sale and realised some of you may find the mod i did interesting.
I had the arm adapted to be able to fly big sleds as well as be used with big vests. It allowed me to use lightweight cameras on my bigger sled as my big arm was too strong. I also much preferred my master vest to the flyer vest.
The mod is reversible so the arm can be used with the original Flyer sled and vest.