OK, I decided to upload a compiled demo of my physics test so anyone can try it. Its based off my pinball tutorial I did, I just wanted to apply real physics to the ball. You can can test it and see where Im having the problems.

The most obvious, which was the same in the tutorial, is that the flippers tend to move inside the ball causing it to go in wierd directions (I am using Ent_move as suggested by conitec).

Second, the ball doesnt always seem to get the same force applied to it when it hits the bumpers, sometimes it will jut bounce and other times it will take off in a flash.

Third, when you lose the ball each time it restarts (you press S to restart) it starts faster and faster.

I added some lights and sound effects to make it better to test. It plays fairly well considering the problems, though I think it could be a lot better, especially if I can fix them.

Any comments are welcome.

Physics Pinball Test Demo