Morris,
Thanks. I checked out the Degroot part earlier this morning. Not knowing it was plastic, I sent them a question asking if it was metal. Based on what you've said. now I know it is not.
Trev,
Morris reponded while I was typing. I had assumed He was pointing me to the DeGroot part and I do have an E3L, so I think it would be the right fit. In the mean time, having forgotten whether or not my barn-find A7 came with one, I checked the garage and was pleasantly surprised to find it did, so I can put off a purchase until the right one comes along.
Richard L.