Got my tz pf swap done and dusted but one pop bumper is somewhat unresponsive. I am thinks the skirt may be the issue in that the spoon may not be sitting central to it. I notice the skirt is tilted downwards on one side which is the least sensitive part of the bumper. Am I heading in the right direction or could it be something else? If hit well by the ball it activates, the problem is generally on a slow touch by the ball.