Based on the answers provided, here are the corrections needed for the 3D object:

1. Please provide clear indications or markings to define which end of the pipe is the "beginning" and which is the "end". This will help to clarify the location of the smaller and larger hole diameters.

2. Ensure that the diameter of the hole on one half of the pipe is approximately 2/3 the diameter of the hole on the other half. This ratio should be clearly visible in the design.