Auto_Bed_Leveling: Enhanced G29 command

[brainscan]

>>>G28
SENDING:G28
>>>M114
SENDING:M114
X:84.00 Y:97.00 Z:-0.78 E:0.00 Count X: 84.00 Y:97.00 Z:-0.78
>>>M48 V4
SENDING:M48 V4
M48 Z-Probe Repeatability test. Version 1.85
Positioning probe for the test.
1 of 10 z: -0.767578 mean: -0.767578 sigma: 0.000000
2 of 10 z: -0.768359 mean: -0.767969 sigma: 0.000391
3 of 10 z: -0.767969 mean: -0.767969 sigma: 0.000319
4 of 10 z: -0.769531 mean: -0.768359 sigma: 0.000731
5 of 10 z: -0.771094 mean: -0.768906 sigma: 0.001274
6 of 10 z: -0.771094 mean: -0.769271 sigma: 0.001420
7 of 10 z: -0.771875 mean: -0.769643 sigma: 0.001600
8 of 10 z: -0.772266 mean: -0.769971 sigma: 0.001730
9 of 10 z: -0.772656 mean: -0.770269 sigma: 0.001836
10 of 10 z: -0.773047 mean: -0.770547 sigma: 0.001931
Mean: -0.770547
Standard Deviation: 0.001931
echo:endstops hit: Z:-0.77
>>>M114
SENDING:M114
X:84.00 Y:97.00 Z:-0.77 E:0.00 Count X: 84.00 Y:97.00 Z:9.23

I just thought i'd do another M114 to see where it thinks it is after the M48 and its totally different!?

**Just thought i'd run it again to make sure its a consistent result
>>>G28
SENDING:G28
>>>M114
SENDING:M114
X:84.00 Y:97.00 Z:-0.78 E:0.00 Count X: 84.00 Y:97.00 Z:-0.78
>>>M48 V4
SENDING:M48 V4
M48 Z-Probe Repeatability test. Version 1.85
Positioning probe for the test.
1 of 10 z: -0.767969 mean: -0.767969 sigma: 0.000000
2 of 10 z: -0.767578 mean: -0.767773 sigma: 0.000195
3 of 10 z: -0.769531 mean: -0.768359 sigma: 0.000844
4 of 10 z: -0.769141 mean: -0.768555 sigma: 0.000805
5 of 10 z: -0.769531 mean: -0.768750 sigma: 0.000819
6 of 10 z: -0.768750 mean: -0.768750 sigma: 0.000748
7 of 10 z: -0.769141 mean: -0.768806 sigma: 0.000706
8 of 10 z: -0.768750 mean: -0.768799 sigma: 0.000661
9 of 10 z: -0.768359 mean: -0.768750 sigma: 0.000638
10 of 10 z: -0.769922 mean: -0.768867 sigma: 0.000700
Mean: -0.768867
Standard Deviation: 0.000700
echo:endstops hit: Z:-0.77
>>>M114
SENDING:M114
X:84.00 Y:97.00 Z:-0.77 E:0.00 Count X: 84.00 Y:97.00 Z:9.23