You might want to fix your google drive link. It's asking people to send an access request, I cannot offer assistance until I see what you are trying to create.
Regardless of what others will say Booleans can be very useful and save you a great deal of time; however, they are not the EASY BUTTON.
They are a staple for NURB's modeling; however, for polygon modeling they have some major restrictions that limit their usefulness.
You must plan your initial geometry carefully so that you can minimize the messy geometry they can produce and minimize the time you have to spend cleaning up the geo.
Maya's implementation, in general, is poor and has a long list of rules you need to be aware of but are, unfortunately, poorly documented. They can often break even when you think you have met all the proper conditions causing you to waste lots of time trying to sort out a problem that in the end just cannot be resolved.
So most people will just advise you not to use them.
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 03-01-2014 at 06:23 PM.