Chris, thanks very much for the information.

One other question came up last night, when I talked to my neighbor who rebuilt a John Deere B.    He said the people who work on JDs cautioned him to use a G-1  gear oil (he used 80-90, I think) in the transmission, meaning it has no additives, because additives can harm some components of a JD transmission.

Is there any such concern with the 77?

Thanks.

Tom