So would the syntax for my first attempt look like.
G29 V4 n4 F75
And then get progressively smaller
G29 V4 n4 F50
G29 V4 n4 F40
etc...
Until I get the probe close to the front edge? And do the same with all sides?
I just tried to issue
G29 V4 n4 F75
And it is instantly returning the 0 0 0 0 0 bed matrix with no motion, and if I issue the full G29 V4 n4 F75 B125 L75 R125, it probes the whole bed. I can use the full syntax to tune the bed probing it will just take longer.