While I had the radiator out, I thought I'd change the transmission cooler lines with Dorman brand lines I had on the shelf. I had to bend the return line which wasn't a big deal, but then found the quick disconnects wouldn't engage at the radiator end. I called the dealer and they said they normally stock them but were out of the return line and could have it in the morning. They said all the local repair shops buy the lines from them. I don't think the local repair shops would buy the higher cost dealer lines unless there was a need. Anyone else having problems with Dorman transmission cooler lines?