Mantis has produced a replacement swamp bracket/plate for TAF that has a built-in ramp to prevent the ball from sticking behind the swamp kickout. My original was dimpled from years of use. Just got this one installed, it's perfect. Definitely recommended. I should note the one I got differs from the one in their website photo. It does not have the dark weld mark, it's much cleaner.
EDIT: Here's the link: https://mantispinball.com/product/the-addams-family-swamp-bracket/
Kerry said there will be a discount coupon for $15 off on the Mantis Facebook page today.