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It's been in the works for a while and Britney's camp knew it was coming ... Kevin
Federline has filed for primary physical custody of the former couple's two children! A source told People Magazine that KFed believes Britney may be exposing Sean and Jayden to "unnecessary risk."

An X17 source has been expressing concern for more than a month, that Kevin would seek full custody. The source is also worried that Britney's attorney Laura Wasser's interests aren't exactly aligned with her client's.