Jeffro
On the matter of tabulations of reigns for the Divided Monarchy it is a simple point of fact that there are so many differing tabulations or charts which appear in Bible Dictionaries and other reference works. If Christendom's scholars and chronologists cannot produce a uniformerly accepted scheme then they and its supporters have no business in critizing WT chronology. In other get your house in order first before you throw stones at another. I have in my extensive research library a publication which presents four different charts for the Divided Monarchy all have different regnal lengths and when you total numbers you have widely different totals for the regnal years for those Kings in Israel and Judah.
As a side point one well respected chronologist who has published several articles on chronology in the Journal of the Evangelical Theological Society over the years and supports 587 for the Fall has produced a king list that nicely agrees with WT chronology having a total number of 390 years. So in so many areas our chronology has support. Further to this our date for the death of Jesus being 33CE long championed since the time of Russell now enjoys widespread scientific support also their has been recent published confirmation for the Date of our lord's birth.
In short our OT chronology along with our NT chronology is well grounded in both past and recent scholarship.
scholar JW