Forget about G29. It is 3 point leveling and might even disable rotation correction etc. What was G29 with distortion correction is now G33!
E is extruder position. It just comes from reporting current position, you can ignore that line.
G33 only corrects until a defined hight (see your configuration) and reduces correction to 0 then. So if you test that feature make sure you are in 100% correction range.
zCorr only appears if you have distortion correction enabled and compiled. Since you said G33 does nothing you do not seem to have compiled firmware with distortion correction.
