Cannot section a Part @ Part level

which results in not being able to section the aseembly as well.

The piece that are failing are both cylindrical and the origin is the center axis. I am using either front or right planes to try to section.

I am trying to figure out what features are causing the problems in the part files.

What has been your experiences with this problem?

I want to try to make sure it doesn't happen in the future.

Thanks in advance...

SolidworksParts And Features