What does the journal entry look like before you post?  If you see the taxes and they are the wrong amounts, chances are you set up the tax codes as Included in Price.  Be aware that if you change a tax code setup, it only changes it for the new entries made after that change, not the previously posted entries.

My journal entry before I post shows everything but the grand total excludes the QST but shows the GST and HST fine. 

OK, you are going to have to show us images of your sales tax code setup screens, the data entry screen and the resulting journal entry.

I don't understand why GST, HST and QST are all supposed to be on one entry and if QST is showing in the journal entry, why the amount is not in the grand total in the journal entry.  Otherwise, I am still thinking you set it up as QST included in Price.

OK, you are going to have to show us images of your sales tax code setup screens, the data entry screen and the resulting journal entry.

I don't understand why GST, HST and QST are all supposed to be on one entry and if QST is showing in the journal entry, why the amount is not in the grand total in the journal entry.  Otherwise, I am still thinking you set it up as QST included in Price.

 see attached photo.

Ok that is the data entry screen.  Can you show me the QST tax code setup?  I am still almost willing to put money on the fact that you set it up for Included in Price.  Setup, Settings, Company, Taxes, Tax Codes.  From the sounds of it, you want the 5 dollars to not include tax.  What I see in the above image is that the $5 includes tax.  If it includes tax, it cannot be added to the taxes at the bottom a second time.