I need to remove the vent. I had it in to service a few weeks ago for a few issues, and one was a rattle. Tech found it was the defrost vent. He put some foam or whatever on it and that resolved it. For a few weeks. It's back and I'd like to remove the vent and check things out. Even though the SC is 20 minutes away, I imagine this will turn in to an hour or more with travel. Would like a first crack at it, but don't want to break the vent either.