Your flippers probably just need a rebuild. Here's the kit you need:
https://www.marcospecialties.com/pinball-parts/WFLKIT6979
Hard to say what's wrong with the drop targets without more info, but I bet the switch on your pop bumper needs to be adjusted. Is it activating weakly, or is it just not activating when it should? If it's the second one, you can just adjust the switch underneath the "spoon." Try to get the two contacts close to each other without touching.