Fuel Filler Neck Grommet Replacement

Thanks. I am planning on dropping the tank. I was more curious if I could leave the filler neck screwed into the side of the body because I saw how they scratched the side of the car before and I didn't want to risk screwing up my paint if I have to do this myself. Hadn't thought about dielectric grease, but I have a good bit of that around.
As long as you unscrew the rubber cover piece in the trunk and slide it up the filler neck you should have plenty of room to install the filler neck without scratching the car. You might need to rotate the filler neck to get it started and inserted, and then you can rotate it back the correct way and mount it to the car.