Question About Mass Discrepancy in CSWP Segment 1 Practice Problem

Hi everyone,
I'm currently preparing for the CSWP Segment 1 exam and working on a practice problem related to mass properties. I modeled the part in SolidWorks, but I'm getting a mass that is off by around 20 to 25 grams compared to the expected value.

I've attached an image of the question I'm working on.
Has anyone encountered a similar issue or knows what might be causing this discrepancy? Any help would be appreciated!

Thanks in advance.