Ender 3 home location I have an Ender 3 and I have a problem with auto home. I use auto home and then level the bed with the wheels beneath the bed. I then start a print and the first layer is well above the bed. Perhaps about a millimeter. If I stop the print at this point and level the bed so that the first layer prints the normal paper width above the bed, everything works fine.

The stops for the 3 axes seem to be in the right places and there is nothing noticeable obstructing them. When I use auto home it does touch the stops at all 3 axes. My belts seem to be tight and there is no movement of the bed if I try to jiggle it with my hand.

Is there a way to adjust the Z axis so that the auto home elevation and the elevation of first layer of the print will be the same? 

This is an example of the first lines of G-code:

;FLAVOR:Marlin 
;TIME:4724 
;Filament used: 1.70716m 
;Layer height: 0.16 
;MINX:96.551 
;MINY:96.545 
;MINZ:0.2 
;MAXX:138.448 
;MAXY:138.455 
;MAXZ:100.4 
;Generated with Cura_SteamEngine 4.5.0 
M140 S50 
M105 
M190 S50 
M104 S200 
M105 
M109 S200 
M82 ;absolute extrusion mode 
; Ender 3 Custom Start G-code 
G92 E0 ; Reset Extruder 
G28 ; Home all axes 
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed 
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position 
G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line 
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little
The Z stop can be loosened and moved up but it seems weird that it would need to be moved and I don't think that would fix your issue. The Z height should be the same for the auto home and printing. I auto home then disable steppers and slowly move to all 4 corners. I have caught myself resting my arm on the X axis and moving it down. If that happens I manually move the Z until it just barely presses the Z stop in when I hear the button click. I have heard some say that they got a warped bed. I wonder if that's the issue. A glass plate would be a good way to be sure or maybe using a straight edge to check.You could also double check the tightness on the wheels is just right. Tomb of 3D Printed Horrors has a really good setup video called "Creality Ender 3 assembly and pro build tips" that has a few other tips that really helped me get set up well.