Align RT to Surface

[[Ni...]]

Hi everyone,

First of all: the text has been translated - sorry for any mistakes...

On the rotary table, I have a part with 12 x 30° faces around its circumference. The plane rotation is one of these planes. 
After manual alignment, the table rotates to the probed surface, which is parallel to the X-axis. 
However, when I start the program using the pre-calibrated start system, the table rotates to 0°, and the surface is then not parallel to the X-axis.

What do I need to do to ensure that the table aligns the surface parallel to the X-axis even when using the pre-calibrated start system?

Thanks in advance!
Best regards