The haslab packs are starting to ship, and they are awesome... but my pack showed up broken. The connection between the cyclotron cap and the pack was too loose. This would cause the pack to not power up, or immediately lose connection as soon as it was put on my back.

Here is a clip of what issue I faced:

https://www.youtube.com/shorts/qBF4A8Fsj1w

This shim is sized at 1mm. You will need to resize your z height only to match what you need to make your connection fit, as it will depend on how bad your connection is to the pack. I ended up using a 5mm z height for my needs, but I thought it would be easiest to include 1mm and have the user resize height.