Congrats on the big increase!
It is amazing how much just one recent 30-day late can tank a score. In my case, I had one thirty day late from January showing on Experian. I was able to make a GW call and have the late removed. Removal of the one late from 6 months earlier took the score up 57 points. It is like the CRA God's think one late means that you are heading toward bankruptcy, foreclosure and multiple repossessions!

Now if I could get Capitol One to excuse two 3-day lates from three years ago, I would be REALLY happy. Thus far, Capitol One has told me to pound sand.
Year 2012: All Scores in the 520 range, during a foreclosure, CC Settlement and high UTIL. Very ugly days...
Sept 2024: EX8: 847; EQ8: 850; TU8: 848 -- Middle Mortgage Score: 821
In My Wallet: Discover $73.7K; Cap1 Venture $51.7K; Amex ED $38K; Amex Optima $2.5K; Amex Delta Gold $18K; Citi Costco $24.5K; Cap1 Plat $8.4K; Barclay $7K; Chase Amazon $6K; BoA Plat $21.6K; Citi TY Pref $22K; US Bank $4K; Dell $5K; Care Credit $6.5K. Total Revolving CL: $300K+
My UTIL: Less than 1% - Only allow about $20 a month to report, on one account. .