The links of the chain between Capt. John Adams Thomas Adams and Benjamin Adams seem suspect for a variety of reasons, including the following:
1. vagueness about the number and names of the children of John Jr. in the source material currently linked to this profile.
2. no wife's name listed for Thomas Adams nor was I able to find one while searching online.
3. A specific DOB for Benjamin which is in a different year from what is shown [http://freepages.genealogy.rootsweb.ancestry.com/~jswdna/adamschart... here]
4. only a year of birth and no spouse listed for Benjamin Adams
5. a current 5 year age gap between Thomas Adams and his supposed son Benjamin Adams
6. genetic evidence which refutes the connection between yDNA tester A114 and the older areas of [http://www.geni.com/path/Jonathan+Adams+is+related+to+John+Adams+Il... this line].
7. Quaker familial records and some will documentation for generations between Jonathan Adams and George L. Adams
Given all of this, I think that it's probable that this Thomas Adams is not the father of Benjamin Adams and it's likely that even if an alternate Thomas were found to replace him, this part of the tree http://www.geni.com/path/George+Adams+is+related+to+Captain+John+Ad... is likely not to be valid.