Jason,
Are these "some" maunscripts of 2 Chronicles translations of the Hebrew or the actual Hebrew text? If they are the Hebrew text, please document where you found this information. I can understand why a language translation of the Hebrew would change the number to 18 to reconcile the text to 2 Kings 24, but is there credible evidence to suggest there is a legitimate textual variant among competing Hebrew texts?

Fred

"Ah, sitting - the great leveler of men. From the mightest of pharaohs to the lowest of peasants, who doesn't enjoy a good sit?" M. Burns