Based on the answers provided, the following corrections need to be made to the 3D object:

1. Relocate the rectangular hole towards the bottom of the original rectangle. Ensure that it is not centered, but rather closer to the bottom edge while still maintaining a small space between the bottom of the hole and the bottom of the original rectangle.

2. Adjust the size of the rectangular hole to be approximately 1/4th the size of the original rectangle. This should be done while maintaining the overall shape and size of the original rectangle.