I have a Pinup, AS relay controls the spot for WOW and also the 5000 when lit alternations. I cleaned the Bakelites with IPA and used auto grade 1000 grit paper to shine the copper. The unit sticks and doesn't lock or ratchet forward consistently this relay is also like a stepper and it is wired into the PF by two jones plugs. It is not overly dirty or gummy looking, and the issue is 100% mechanical because I can see the playfield spot move when I mannually push in the relay tray and it ratchets forward. The issue is that it gets stuck between strokes and doesn't lock . There are two arms and 2 Bakelite plates on this stepper/ Relay. Does the leaf switch on top create the tension? The spring looks and acts normally and this game is probably under 50,000 plays. Thoughts ?

I agree on the switch tension. I'm also going to put a thin coat of superlube on the Bakelite . I have a parts game and I can try another tension spring if the leaf tension and PFTE synthetic lube don't improve the stepping