Good to hear you are making progress and maybe I am being a dick here but whatever, I am going to say it anyway. IIRC, you are in the beginning stages of SS (you are a rank novice), and when you are beginning such a program you are not "setting PRs". This is the kind of bullshit my local crossfit affiliate would talk about all the time, even for rank novice lifters that literally just started doing Crossfit and just learned the major Olympic lifts. At this point in the program, you should not be remotely concerned with setting a PR. On the contrary, you should be concerned with making steady, linear, upward progress. Your goal is to get stronger and get stronger with nearly perfect form. The weight is NOT heavy right now and you should NOT be stalling at 160lbs. If you are stalling at 160lbs, then you are not doing the program. You can worry about "setting PRs" when you get out of the Novice phase, and that won't be for a very long time.