I'm in a bit of a situation where my existing ECU port (80-B) went bad somehow??? I have a Model 3 LR which was manufactured in September 2021 and which I picked up in December. I've had my service appoitnment to replace this part moved now three times and this latest appointment is completely unacceptable as I have a road trip. I'm thinking of just buying a replacement 80-B on ebay and trying to put it in myself until I can finally get in and get the 00-B--which is what Tesla has promised. Since the parts are the same, is it literally just remove the old one and put the new one in? the car should freak out or have an issue?