To quote from Major League... "too high" I get too many high pops off the hinge and only get him 2900-3000.
IJAG not sure if this is your problem, but you have to drag the hinge through your swing before letting go of the mouse button. The first 2-3 times I tried the game I was trying to figure out why I couldn't get the hinge to swing hard by simply letting go of the mouse button.