12 Team PPR. Looking to make some moves. Any thoughts? WHIR

[JohnnyBighead]

12 Team Yahoo League with 1 Point PPR Scoring....
1 QB, 2 RB, 3 WR, 1 TE, 1 Flex RB/WR/TE, 1 K, 1 Def

QBs- Cam Newton, Josh Freeman
RBs- LeSean McCoy, Ryan Mathews, Frank Gore, Joseph Addai, Stevan Ridley, Kendell Hunter
WRs- Roddy White, Steve Johnson, Dwayne Bowe, Victor Cruz, Danny Amdendola
TEs- Jimmy Graham, Jared Cook

I have worked relatively hard to get my team to where it is now... I am 3-1 with the most points scored in my league by far.... Lost to the 4-0 league leader by 2 points on a monster Tony Gonzalez night...

I like my team as it is, but I think it could be better... Any thoughts as to who I should think about moving? I have a ton of RBs at the moment, so that is my initial though...

Also, I can get Knowshon right now from the FA list. It would be a speculative move at best, but he may be better long term than some of my guys. I'm also waiting to hear the latest on Amendola... If he is gone for the season, then he will be dropped and will leave me with 4 RBs....

FA looks pretty slim....
Hines Ward
Fred Davis
Austin Collie
Lee Evans
Michael Jenkins
Mohamed Massaquoi
James Casey...