Which mount for Red Sea Led 50?

[Retgals]

I have a 50x60x50 Aqua Medic Cubicus with a Red Sea Reefled 50 on it with the corresponding mount. However, the lamp does not come out nicely in the middle of the tank because the mount is calculated at 50 cm deep instead of 60 cm. Which mount with the same height has a slightly longer and possibly adjustable mount so that it hangs nicely in the middle of the tank.

 

[ReefHog]

I really wish their arms were more universal. Seems like they only fit rimless tanks and are too short for peninsula setups.