Need help at RB position. My league starts 1 QB,3WR's, 2RB's, TE, and a flex. My starting WR's are Brandon Marshall, Andre Johnson, Michael Crabtree, RB's are Jahvvid Best and Marion Barber, TE is Antonio Gates and starting flex is Jonathan Stewart. My bench is made up of:Bernard Berrian, D Bryant, M Ryan ,Laurence Maroney, D Brown and Golden Tate. I have an opportunity to solidify my RB's by trading Crabtree for Pierre Thomas, I NEED OPINIONS!! I love my WR core, should I make this move that I beleive would help my weakness at the RB position, or would trading Crabtree away just hurt what is the strength of my team?