Need help with Modular Marine 800g Low Profile overflow Box

[Noobiereef]

This is my first tank i setup. I bought the Modular Marine 800g low profile overflow box. Im having trouble with bean animal setup cause the box has 2 bulkheads stick deep onto the box so i dont know how to install bean animal style. It has 3 holes but 2 of them are right under the 2 bulkheads. How would i do the bean animal style.

 

[BrewPug]

Disassemble the overflow. Take the bulkheads out and use a hacksaw or similar to cut them shorter so that there's room to place the drain pipes. I had to do it with mine.