We all know Blac Chyna is getting paid hefty in child support after giving birth to her second child Dream Kardashian. Yet it has been rumored for months that the Kardashians don't see her as "fit mother" and according to sources close to Rob, the company she keeps are into drugs. After Chyna's fiasco at the park, it seems that Rob might be pushing for full custody. Chyna's lawyer, Walter Mosley, tells TMZ ... "BC and Rob still have a valid custody agreement in place, and Chyna protecting her daughter shouldn't affect it in any way". They were told that any attempts by Rob to alter custody stipulations will be defended "by any means necessary" ... legally speaking.