Ken, In January 2013 you had a dialog with Obed Odom about no-calls of L41 among I1 members but not I2 members. FTDNA's new tree moves L41 from the I stem to the I2 stem. If you look at my BigY results, I am positive for the I1 branch and for L41. Is this a clue that proves the FTDNA tree is wrong or does it mean something else? I am also positive for L104, deep inside of I2, but negative for everything between L41 and L104. I interpret L104+ as a private mutation in my line which just happens to match the I2 L104. Can you think of other explanations? Carl Sheffield Kit #123861