I have posted the most recent version of the S6881 tree that I keep based on BigY testing. Since FTDNA limits us to seeing only matches who we have less than 30 SNP mismatches with we lose sight of a lot of the group. For this reason, I put together an Excel spreadsheet type tree with as many of the results as I know. It is quite large with over 70 testers. I'm sharing it in the files section for anyone else who wants to use it.
Chris
