Dark scratches/marks on lab developed film

Hey all,

These are some scans from a test roll I ran through a new camera. Taken on 120 HP5+ -- could these marks be occurring in-camera or was this a development issue? I sent this roll off to a lab as a wait for my developing equipment to arrive from Freestyle.

Appreciate any insight, want to make sure this camera is in good working order before I run a ton of film through it...

These could be strain marks/cracks occurred due to small radius axels and too much pulling force on the film in the camera during film transport.