I downgraded my flippers to the early style (non linear) during my Xenon PF swap and I'm glad I did. Replaced every wear part and they rock. You can rip the spinner and make the awesome through the pop bumper shot to hit a top roll over target. Nailing the tube shot with the right flipper now is possible with authority.
Bottom line the linear set sucks, even when rebuilt.
If you want to go whole hog, peel a bunch of copper windings off the coil. Keep spare PF plastics on hand, you'll need them.