xArm Straight line

If the xArm makes a straight line from X=-447, Y=-178, Z=80.7 to X=500, Y=-178, Z=80.7 the actual Z between the level (as on the video) changes. Only when X=0 the actual Z is correct.
When X=500 the actual Z is 5 mm more than when X=0.
When X=-447 the actuel Z is 10 mm more the when X=0.
See the video.

When I put the xArm back in ‘zero position’ the arm is not correct.
The arm is leveled on the frame but when i put the arm on ‘zero position’ the xArm is not leveled. See picture.
What can be the problem?

How can I send a video?

Hi Frank, you can use youtube or google driver link. Please post the codes or screenshots of codes as well.

Thanks