I have a Fly6 rear camera which normally fixes to the seat post with its Velcro strap. I also have a Varia RL515 which I fit using an under saddle bracket. I am about to fit a Topeak rear rack and an MX top bag. The hight of the bag means I cannot use either the Varia or the Fly6 in their normal locations. I now need to fit both on the rack. I’d like to find a bracket that will take both devices and fix to the rack using its existing bracket mounting holes. The Fly6 Velcro needs th we bracket needs a round pillar fixing of the style which would accommodate a rubber Oring fixing light. Has anyone done this and if so direct me to a supplier.