Good news update
Ebay was surprisingly helpful. I called them (I usually avoid the phone). I expected that my only option would be to open an item not as described claim. I was quite pleasantly surprised when the eBay customer service representative listened to my story with obvious concern. He told me that he would contact the seller and tell her that I had a problem. He said that if I hadn't heard from her by a certain date to call back and eBay would open a case on my behalf.
Several days later, I received a $75 partial refund offer from the seller. eBay gave me a month to accept or decline the offer. I sat on it for a week and a half or so then accepted.
In other good news, I took the trim by an auto body shop. One of the guys said he didn't think he could do anything with it then took it back into the shop with him. The next thing I heard was the sound of steel hammering on steel. I panicked (I was planning to use a rubber mallet) and raced into the shop all full of thanks and I can take it from heres. I was amazed by how much he did in a couple of minutes and realized that I should have trusted the pro to do it right. He said he hadn't quite finished it, but I was already a bit embarrassed. I told him, very honestly, that I was impressed with the work he'd done and asked what I owed him. He said nothing. Wow! and I thanked him again. I was afraid it was going to be an expensive fix.
So, all has ended well so far--unless I foul it up by trying to finish it myself. I'm reasonably confident I won't. The man at the body shop did the part I didn't think I could do.
Sarah