There are 4 screws holding the spine/main motherboard plate to the case. 2 under the case, and 2 in the top of the case. These comes pre-installed with transport locks as seen below:
By releasing these, you are able to move the spine sideways inside of the case. Our recommendation is to release the ones in the bottom first, and then release the ones on top to keep from accidentally scratching the case. To smooth up the build process, we also recommend to just fasten 1 or two of the top screws while building so you can more easily adjust the build as you see fit until it's done.
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