Instead of pushing on the regulator, try little sideways taps. Here a screwdriver works better than pegwood. Little taps, not hard knocks. This works for me when chasing the last few ms.
That looks far better than the one I have. I don’t think mine goes up to 6500K. Mine makes no difference at all when I have the bench lamp on, not even worth switching on. It’s few years old now and the bench light is fairly new.