Need some remedial nozzle height assistance

[WatsonGravy]

I'm having a similar issue with the ABL. My Z_PROBE_OFFSET_FROM_EXTRUDER is -0.70 with the paper loose between glass and nozzle. I load a print, it runs g29, starts print and the nozzle is hitting the bed. I change the offset to -0.50, upload and run the print again with the same result. Nozzle is still hitting the bed. I adjust the offset multiple times till I'm finally at 0.0 and still hitting the bed.

Update.. Changed the offset from -0.70 to 0.70. This should get me high enough to "air print". I saved and uploaded. It is still touching the glass. I can bring the Z up manually .20-.30 and it's off the bed. Could I have another setting off in Marlin or could it be Simplify3d?

Eqn coefficients: a: -0.00 b: -0.00 d: -2.24
planeNormal x: 0.00 y: 0.00 z: 1.00

Bed Level Correction Matrix:
0.999995 0.000000 -0.003181
-0.000001 1.000000 -0.000409
0.003181 0.000409 0.999995
echo:endstops hit: Z:-3.01
echo:Active Extruder: 0