[Mesorah] She'ata / Sha'ata

[R. Rich Wolpoe]

  When I discussed morid hageshem with RYBS, he knew a lot about who used which girsa, but knew nothing about the fact that goshem was an emendation by a printed T'NaKh, and that all the mss. had geshem.»

Gosh! So goshem is a bad emndation. This rains geshem on my parade

Who made this emendation?

What do Keter and Leningrad codeces say?
Shalom and Regards, RRW