Two years ago rapper Tyga tried to wrestle custody of his son King Cairo from his ex, Blac Chyna, branding her an unfit mother [click here if you missed that].
Now Tyga is gearing up for another custody fight...
Insiders tell TMZ Tyga is concerned for King Cairo's welfare after Blac Chyna's drug arrest in Austin, TX last week [click here if you missed that].
The source claims Tyga has already filed the legal docs asking a judge to award him primary custody allowing Blac Chyna visitation on the weekends.
