I'm a new owner of this classic game. Twilight Zone: when the left spiral magnet catches a ball for various reasons, the ball is held there until the machine starts looking for the lost ball, and at some point one of the checks is to release the ball from that magnet. Until the check releases that ball, however, it is hung there indefinitely, and the magnet has too strong of a hold to nudge the ball loose of that magnetic hold.
Is this a known issue? Is there a known fix?