Z axis plate upgrade and belt tensioning?

[rcsarge (Robert)]

Mark,
Take a look at this post. I had a similar issue and it was corrected with an $0.80 part.

Z axis kick back - loose belt

I have noticed that the new z axis on my XXL upgrade has a much looser belt then the original S3, and no way to add more tension. I believe this is the culprit causing the axis to give kick back and loose steps while making pocket cuts with end mills. I thought that perhaps I was missing something so I went back through and read the directions for the XXL ( as there are no directions for the upgrade kit.). I noticed that the Z plate in the photos in the directions is completely different then …