4 points Printbed leveling (Protos)

I create a printbed leveling for 4 leg printbed´s for my Protos V1,
I put all improvements from my Prototypes inside but I never Print it again.
So please let me know if there is still an issue in it and I´ll change.

Shold be also works for all Printbeds with 230x230mm ( 215mm distance of screws).

update: I was asked for a version without support , its now online