Thanks you guys!
My training was pretty simple really. Something I didn't do, was any specialty exercises. Leading up to 440ish I had occasionally used deficit deadlifts, bands, rack pulls. Also things like pull-thru's, GHRs, etc. Nor did I do any rep work like I had before.
I pulled heavy singles once a week, but multiple of them. Anywhere from 3-7 singles at 90+%. That brought me to my first 500 pull. After that competition, my knee was finally healed after an 8 month squat lay-off, so I was hungry to squat. I ran Smolov Jr. for squats, and deadlifted singles in the same way during that time. My weights were weak because I was extremely fatigued. After it was over and I rested a few days and got my first 525 beltless. Once I belted up, and rested a week for the meet, I pulled 557.
That pretty much covers it. I owe it to the form changes, and the squats.