Game Boy Advance Frontlight Perfection
A simple adjustment of the game boy advance frontlight panel will give you a perfect installation with no hot-spots. Just remove some plastic below, readjust your reflective strip and you are good to go! Using a good razor and x-acto knife makes this mod a lot easier.
When you place the LCD on top of the loca, make sure its in the right spot at the top of the shell. You'll need to be careful here as you want don't want the LCD in the wrong spot after your loca is cured.