Ryan! Dude! Stop trying to hit defenseless receivers with your shoulder pad when they aren't looking! I don't care what the rules say, all I know is that when you hit a guy like that and he stays down you get a flag. Every time. Stop doing it. It doesn't matter how low you hit them or that you aren't leading with your head. You hit the guy, he fakes like he is hurt = flag.
Here's a solution, play the run. If you see a pass, play the ball or tackle the receiver after he catches it and swat at the ball. The shoulder pad hit is not working.