j2a4d M319 project aims to subdivide our very widespread group. At present we have 10 subgroups. If you are j2a4d / j2a3d / j2a1d please join, because we can only attempt the difficult task of grouping STDs if we have sufficient members. Indeed if you are j2a or j2 and you have similar sequences please join and we'll try and see if you are a member of the group.
If you tested with Ancestry or SMGF then consider the following http://www.familytreedna.com/landing/ydna-transfer.aspx