3-3 in league, your thoughts going forward?

[Replicated]

It's a standard scoring league and right now my RBs are killing me. It's a 12 team league and this is my current roster breakdown (I've marked this week's starters):

QBs: M. Vick and M. Stafford (s)
RBs: S. Greene (s), P. Hillis, E. Graham (s), M. Morris, and M. Tolbert
WRs: V. Jackson (s), D. Bowe (s), AJ Green, P. Harvin (s), and V. Cruz
TEs: B. Pettigrew (s) and V. Davis
K: J. Hanson
D: Packers

I've tried to salvage these last two weeks with pickups of Graham and Morris at the RB position, but this may only be a temp solution. Moving on to the next few weeks I'm thinking of trading Stafford + a WR for a solid RB1. There are a few teams in my league that are in need of a great QB and I could possibly pickup R. Matthews, B. Wells, A. Bradshaw, or W. McGahee. I'm still pretty new at this and don't want to burn a very good QB for a dud, but leaving him on my bench when I have a weak RB core is pointless. Any opinions on what I should consider doing?