I never had any issues before but with the finish coming off, I figured it was a good time to have Doug refinish it in Nickle Boron. She’s nice and smooth now. I shot 180 rounds today and I didn’t add a drop of oil on reassembly. 
Nice, how much did that cost on the PF-9, was it any different than the pricing for the same work on the M&P or Glock?
I’ve got a PF-9 with a hard chrome finish and I am considering getting another slide to send off to get a front sight dovetail machined in with a NB refinish, then trade off the chrome slide.