A buddy of mine asked why I didn't put the hole for the cane in the center of the cap. This would make threading the cap onto the fermenter easier. The reason I didn't is I was worried the small gap between the two holes would crack after a while. I figured with the frequent cleaning as well as the stresses from the cane and the hose barb it would be a matter of time before I was replacing the cap.
The two holes I made are located where the injection molding flashing is removed which made it easy for my forsner bit to get started.