It's worth rebuilding your flippers. You can buy the kit online at Pinballlife or Action Pinball with all the parts you need. Or stop in The Game Exchange they will have the parts there too. It's easy to do and it'll make the game flip like new.
Here's a link to a thread with everything you will ever need to know about maintaining flippers.
https://pinside.com/pinball/forum/topic/vids-guide-to-upgradingrebuilding-flippers
I'm guessing you have already been to Tilt Pinball?