Haven't read the SIB myself, but know the bulb base is a bit larger than it should. I'd imagine a jeweler's screwdriver is all you need to make the base tighter where it needs to be. Haven't scrutinized the light module, but removed one to align the taillight properly (one had a bigger gap below than above, and bothered me), and it can't be any simpler. Doesn't take a rocket scientist to be able to fix it. Another trick is to pull up the contact tabs at the bottom of the socket, so they make more pressure when bulb is seated. And no, I wouldn't take my car to a dealer just for that either
. Good luck.