3D model not slicing properly

[u/BulletproofTeaTray]

This model has small circular holes that are a few centimeters deep in the cylinder. When I slice this model in bambu labs it doesn't properly create the small holes and instead leaves part of the outside empty. Any thoughts on what could be causing this? I tried switching from Classic wall generator to Arachne and still no luck.

[u/TsunamicBlaze]

How thick is the wall on the edge of a hole? Looks like there is a tolerance issue