Is There A Mod To Fix The Uncle Thing? SOLVED! Yay

I haven't corrected this yet, but noticed in TS2 if it's the second uncle out or third then they are not kin in the family tree anymore once the child ages up. Example, a Sim has two brothers and a sister, the second brother (farthest out on the line) (family icon) in relationship panel but once the child grows up of the sister or brother, the Sim who is futher out on the family tree will no longer be kin to that adult niece/nephew etc.