Quoted from blowback1976:You can try the following, they're overseas, and shipping may take awhile:
https://www.pinballwizard.nl/contents/en-us/d1193_The_Walking_Dead_stern_pinball_parts.html
Please don’t order there. Known to not deliver or take a long long long time. If You really wanna give it a shot, use PayPal as payment option.