IIRC, the ribbon cable isn't quite long enough to move the buttons to the side. If you can find a longer ribbon, that might be the easiest solution. The other choices is to make up your own ribbon and/or extend the buttons with wires. Truthfully, you can do without the buttons.
What I did was move the buttons to the back side of the screen (i.e. I cannot use them). I unsoldered the IR receiver and soldered a 2 pin connector in it's place. I then created a short cable (about 12 inches) and connector and attached the IR receiver. This lets me position the IR receiver in a convenient place so that I can use the remote to control the screen features, when/if needed.