Great job , we had issues in the rear left corner with warping in other thread on was measured variations in the bed temp but not ideal and was not sure if it was the bed or some thermal issue in the left corner
I did tests with PLA 50C and ASA 110C both the same with PLA was able to solve it
Can you please bump it to 100C and take a few pictures lets say in the beginning and 5-10 minutes apart with more focus on the left rear quarter of the plate . It will be great to see the variation at start and how long it takes to become almost even or with in 2-4C variation or at least after first
Other wise i print PLA at 50C plate all the time