Wade block got some material inside the large gear axle

Hi, I just fixed my old extruder, and while printing parts for a new E3D mounting block, I noticed there is some exceed material inside the tunnel for the hobbed bolt, see red mark in picture. On some layers, there is material printed inside the tunnel. Is that by purpose? Does this have a reason I didn't understand?

probably a bad stl file , can you post a link.

It is support material to allow it to be printed. I cut it out with a small blunt knife.

Basically you can't print a hole with nothing underneath it as the outline would be printed in mid air.

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When I assembled the parts, I noticed that at least a part of the excessive material is used as support for higher layers, correct. But at least a part of the bigger part (the lower red "x" at the picture) isn't used, and the complete partial cirle - the upper red "x" at the picture - isn't needed.
A link to the file? Sure, the original Nophead repository has the plastic parts. So I wondered if there is a reason. Never mind, I took a cutter and it's history.