Now, I'm not here to tell you that Maimonides would say that they made it wrong--although he would (see Menahot 3:7), and he even drew a picture of what it should look like.
He made ten gold candelabras according to the specifications for them and placed them in the temple, five on the south side and five on the north. (II Chronicles 4:7; cf. I Kings 7:49)Where does he get this idea? Commentators attribute this to the extra yud, the tenth letter of the Hebrew alphabet.
So, too it says concerning the Menorah, "teiaseh ha-menorah," with a yud, and this is why Solomon makes ten candelabras, for it is inconceivable that the Torah would command to make one Menorah and Solomon would then make ten. (Rabbeinu Bahya, Ex. 25:10) I have seen copies examined by the scholars of Tiberias, and fifteen of their elders testified that they inspected every word and every dot three times, every plene and every defective, and a yud is written in the word teiaseh. However, this is not what I found in the French, Spanish and English scrolls. And the ancients expounded that the additional yud alludes to the ten candelabra made by Solomon. (Ibn Ezra, Ex. 25:31)These two medieval Spanish exegetes refer to the same Midrash, which is not known to us. R. Bahya b. Asher does not seem to be aware of any variation; ibn Ezra, who lived earlier but was far more well-traveled, seems well aware of this issue. Maimonides is not conflicted at all: his Yemenite Torah text has no yud. What does yours have? And which Torah do you have, the authentic Mosaic one or the corrupted one? The theological and philosophical questions of how we relate to the Bible are complex and convoluted. But a good place to start is the realization that there is only one One. Everything else is commentary.