CPU players penetrating too easily....

I'm playing on Superstar difficulty with fgrep's sliders and I have this problem. My problem is, that CPU can too easily penetrate into the post. They souldn't use some freestyle, the offensive player simply runs into my defender and advances with the defender into the post (I've tried many ways: using charge, trying to steal the ball, using TURBO button against him or simply stay in front of the attacking player - but nothing helped). When I try the same thing, the CPU defender stays on his foot like a rock and I can't get past him. How to get rid of this?

CPU players are unstopable during fast break...
only if all my players have high block ratings.. then i can stop them scoring..
orelse.. all of the cpu players who fast break... run unusually... fast..
realllyy fast..

Never give up baseline.....guaranteed score for the other team.