I am looking forward to getting a stock Twilight Zone. I want to bullet proof this right away and prevent problems. What can you recommend?
Here's an updated list of suggestions below:
1) Cliffy set (http://www.passionforpinball.com/tz.htm)
2) NOT RECOMMENDED Trifurcon pins for the GI illumination connector (https://pinside.com/pinball/forum/topic/wpc-burnt-gi-connector-pre-emptive-repair#post-3613866)
3) Pinball Resource enhanced stand-up targets for the Greed (near scoop) and Clock (between ramp entrances) targets. (http://www.pbresource.com/pfswitch.htm)
4) Clock board replacement (either http://www.rottendog.us/CLK001.html or http://www.german-pinball-modular.de/final-tz-clock-pcb-english.html )
5) Pinbits Magna-Flip sign reinforcement (http://www.pinbits.com/index.php?main_page=product_info&cPath=13_2&products_id=133&zenid=7276bf78fb3d2fd73f30b947b43c9903)
6) Update to the 9.4H ROM (http://www.thatpinballplace.com/eproms/wpc.html)
7) Cabinet-leg protectors (http://www.pinballlife.com/index.php?p=product&id=2711) and cabinet-button protectors (http://littleshopofgames.com/product/williams-bally-cabinet-flipper-button-clear-protector-kit/)
8 ) Plastic protectors (http://www.pinbits.com/index.php?main_page=product_info&cPath=13_2&products_id=153)
9) Mini-playfield switches (http://www.greatlakesmodular.com/index.html?http://www.greatlakesmodular.com/products/pinball/tzmpskit2.html)
10) Eliminate Z-connector (http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Poor_Connections_between_the_Power.2FDriver_board.2C_the_CPU.2C_and_other_PCBs)