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Using the Gcode auto level is great but when I go to print its not level. using the lcd controller I moved the z to 0 and moved the nozzle across the bed and it seems to be a horizontal radius issue. Is there a way to fix this?

There are two different things that could affect this. The first is as you described, bed leveling. This assumes that the delta motion is indeed planar and the bed simply needs to be adjusted to be parallel to that motion. This can be done in firmware too. The second is delta radius, which is a parameter used in calculations movement. If it is not correct, the nozzle appears to move in an arc either up or down. Delta radius is a phsmusocwl measurement but can be calculated with delta calibration. Can you determine which of these you are experiencing? Simple test is if the former, the tilt will cause the nozzle to be high at one point on the perimeter and will be lower on the opposite side. If the later, it will be about the same all around the perimeter and either higher or lower in the center.

I have the same issue. Are there any videos to help fixing this in the firmware or code?

@Twac1, read my post. What issue? Did you test to determine if it is simple planar leveling or delta calibration? We can't help without more detail. Of course it can be corrected. Follow the delta calibration guide and do it the old fashioned way. That's the way we all did it up until recently.

This is the gold standard for calibrating AND understanding what it's all about: http://minow.blogspot.com

The phrase "auto level" is a misnomer for delta printers. It is a small part of the calibration required to get good prints. A better way to talk about it is "auto calibration" which includes "auto level" for delta printers.

Maybe this will help:

1) Imagine that you worked through the minor link and completely calibrated your printer manually and it is perfect!

2) Now, lift one edge of your bed a 1/2" - let's say near the Z tower. Now the bed is tilted with respect to how the nozzle is traveling. The nozzle travel is mathematically precise but is not parallel (or level) to the bed. That's leveling.

3) Now imagine you start with the same well-calibrated printer in 1) and you change the delta radius parameter by 10 mm. Now when you attempt to print you will see that the nozzle does not travel in a plane, it actually travels in an curved path more or less dish shaped. It is either high or low at the center with respect to the perimeter. Some people incorrectly refer to this as a concave or convex print surface. The print surface is a piece of very flat glass, it is not convex or concave - the TRAVEL of the nozzle as calculated is causing the problem.

I was having issues with the leveling part of things and it was definately related to my endstop screws. In attempt to solve this, I was going through the v2 user manuals method of endstop screw adjustment and things were going well. Somewhere in the process I must have reset the z height to the top of the limit switches and now when I try to home the printer, all it wants to do is go down about 50mm on all legs. Now when I go to home the printer, it completely fails regardless of if I am using the LCD screen for control, the gcode script for the auto-cal, or MatterControl. If I try to reset the z-height it will only go down to about -100mm before it completely stops responding.

When I was using the original auto-cal script to set my horizontal radius and my z height, I was noticing studders after it would home completely messing up any adjustments I was making to the endstop screws so that is why I abandoned that for the V2 calibration method using only the lcd and manually setting the z-height. Is there a way to hard-reset the rambo to fix this odd behavior I am having or to do something about the studdering after homing on the auto-calibration script?

edit: I was able to solve the weird behavior by resetting the z-height incrementally in -100mm increments and the homing feature seems to have started working again. I am still having issues with the studders when homing using the auto-calibration script though or trying to home using the position feature in the menus.