Paul, You don't need to touch the alignment screws to swap out the headlight units there's a much simpler way to do it:
1) Pop up the lights into the
"up but off" position.
2) Unplug the headlight motor relay
(Far right hand corner of the frunk as looking from the front of the car) to ensure that there is zero possibility of the lights coming down whilst you're working on them.
3) Remove the black plastic surround from the headlights
4) Remove the top 2 screws from the chrome headlight surround
(these will most likely be rusted to hell and will probably get sacrificed during removal)
4a) If needs be remove the body coloured headlight cover to give better access should you need to cut off the screws in
'4)' above
(shouldn't be necessary but it sometimes is if you can't get purchase on the screws any other way
- best avoiding if you can as realigning the covers afterwards is fiddly)
5) Once you've got the screws out you can pull the top of the chrome surround forwards enough to pull the headlight out and unplug it.
6) Fit the new light
(remembering to plug it in first!).
Take care not the scratch the plastic lense on a Raybrig against the surround as you put it in.
7) Put it all back together using new screws on the chrome surround
Once you've got decent screws in the top of the chrome surround you can use the same method to replace the bulbs at any time as well without having to muck around adjusting anything.
