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I tried following that video, but it's such a dramatic change that it makes no difference. The extruder swings from the center and raises to the edge, as you saw in my video. In the video they show the radius change creating a rise like yours but of around two inches by changing the radius from 129 ...

https://www.youtube.com/watch?v=g3CqWxTcV38 Bed radius calibration starts at about 3:30 into the video. That's almost two years old, but I don't imagine it's changed much. At least the process and the required adjustment rates and effects will be the same. I tried following that video, but it's ...

For some reason when the extruder goes towards the edges of the printing bed it lifts significantly. And i have no idea how to fix it.

Here's a video of it https://www.youtube.com/watch?v=dZcWT75678M