If you attempt to do this yourself, make sure you have money put aside for the mental rehabilitation you will have to go through afterwards!
Doing this diy means that you will probably be re-assembling the set to view the crosshatch on-screen to see which way you have to move the panel.
This means 'pull apart - make an adjustment - put together - check the result', over and over.
Mind you, I did whittle the turnaround time down to less than 15 minutes. I left off everything that