Just an opinion but I would see what works or doesn’t work before replacing a single rubber. To easy now to take an inventory of repairs and get it working Before buying or not buying tons of new parts. No sense polishing something your going to toss out! Just be safe and check all fuses and grounds before digging around if this is your first swing at restoration. With that said, it’s hard for many (myself included) but after it working assess the actual value of the game and how far you should actually go. Sadly some games or components are not justifiable at a certain point. It’s just a fun player. Good luck.