"Thev can change 607 BC to 586 which is the actual year of overthrow of Theocracy from Jerusalem, according to all reliable SOURCES INCLUDING JEWISH ENCYCLOPEDIA, and reach 1935 as the end of gentile period."
No, changing the destruction of Jerusalem to 586 would still keep the end of the gentile times as 1914 area.
That is how it was prior to Nelson Barbour changed it.
Vidqun was right. " in 605 BCE, Daniel and his companions would be deported" That is when the 70 years started ending in 537, give or take a few years. But that is not the issue here. The issue is when did the kings in the line of David cease being sovereign on Jehovah's throne. When that happened, that is when the gentile times started. That happened 2520 years prior to 1914 CE.