Details, please?
The trop "yesiv" is
always found on single-syllable words
only. Additionally, the yesiv trop is written before the first letter of the (single-syllable) word. Also, every trop is appears in the taamei hamikra exactly the way it should be leined i.e. mil'el vs. milra etc. The only thing that doesn't match up is the name of the yesiv is a two-syllable word with the trop appearing between the two syllables which contradicts the actual trop.
R' Yaakov ZL therefore suggested that the actual name should be "tiv (siv)" with the trop appearing beforehand.