Description Stern Iron Maiden Playfield Upgrade Kit Don’t get cheated out of a high score or get bogged down by a ball trap. This kit upgrades the two loop optos to recognize fast balls and fixes a ball trap. The loop opto adjustment improves loop recognition. As a result, extremely fast balls (which run up the ball guide) are recognized almost without error. In addition, the ball deflector on the right underneath the ramp ensures that no balls will get stuck. Works with a models; Pro, Premium, & LE models.
