Join the club. Nearly all my P1's were awarded (4-days over the weekend), then "removed due to line constraints". Instead I got 4-days from layer 7 with locals backed up to all but 1 of them. As a senior FO, I thought I had a good handle on PBS and a good bidding strategy. As a moderately junior captain on a different airframe, I feel like I need to re-learn everything. If only we had a system that didn't require one to be a software engineer to understand...