Locate the M3 screws and nuts in your HUGE upgrade kit.

Using an M3 alan key (hex key), undo the screws that hold the left and right sides together. A Torx T10 will also work.

Add the extension bar and fasten with the provided screws and nuts.

Use the provided screws in the HUGE kit to fasten the left side motor to the other end of the extension bar.

It can help to have a friend hold the machine while you fasten the screws. Another way is to flip it length-wise so that you can access it from both sides while it rests on the limit switches.