Manual bed levelling assistant

[appjaws]

I have a bed with adjustable screws on all 4 corners of a 200x300mm bed.
I assume that the results of the assistant shows the screws in the same order as the M671 entry in config.

This seems to work well except with a 4 screw system it takes a lot of tries to get the desired result.
The problem is that the screw allocated to be 0.0 keeps changing and so it is very difficult to see if the previous adjustments were correct or enough.

So Is it possible to always have the same screw as the reference, that way it will be easier to see the effect of changes.
Paul