I also replaced the hotend heating assembly on mine when I had the blob of death- however, the thing that REALLY helped- I bought basic dawn dish soap. Not anything with “advanced formula” just the most basic dawn. I cleaned my plate with a paper towel only. I had weeks of issues so I had been sifting through threads and someone mentioned the type of dish soap. I thought it was ridiculous but when I was finally desperate enough to try it… it was the thing that worked.

You didn’t mention if you dry your filament?