Does Israel's national blindness mean individual Jews cannot be saved?
No. Israel's national blindness does not eliminate individual Jews' opportunity for salvation. God deals with Jews on both national and personal levels; the national blindness does not take away the personal opportunity. A Jew still has every opportunity for salvation that Gentiles do, but on a personal basis, not national.
Les explains that God deals with the Jew on two levels: national and personal. When Israel was blinded nationally, that did not take away the personal opportunity for salvation. A Jew still has every opportunity for salvation that Gentiles do, but it is on a personal basis, not national. This occurred after the Jews opposed the gospel, and God began calling out Gentiles as a people for His name, the church which is His body. Les emphasizes that God is not unfair; individual Jews can still be saved personally.