Help needed with 2 things (screens and run D)

[JimmyT85]

Hello all

Had a few games of Madden since picking it up on Friday, and I'm really struggling with 2 things.

First, is the screen pass. Whenever I select a screen, and when I drop back with my QB, I always get sacked straight away. I literally have no time to let the play develop, before passing it to the RB. It seems like my QB back peddals too slow, and the lineman chase me down in an instant, and sack me.
Does anyone have any tips, or can tell me what I might be doing wrong?

Secondly, is run D. I've never struggled with run D in the past, and all of a sudden, I just cannot stop the run. It seems that my D-Line just gets pushed back instantly, and the CPU opens up MASSIVE running lines. I've tried blitzing, but I still get gashed. The Raiders ran for over 250 yards on me (I was Packers). I used to be pretty good stopping the run, but just can't seem to do it on M15.

Any help is greatly appreciated folks

Thanks