Add additional fee to shipping outside US

[JonQCoder]

The Connect to UPS module(v1.4.0) consistently gives the incorrect amount for UPS Worldwide expedited. It is almost always off by $15, so I thought I would just add $15 to non US shipping, however none of the changes to the module i've made seem to have any effect. Perhaps I am changing the wrong bits of code. If I wanted to add $15, which line of code would I need to change?

 

Edit:

I have attempted to add it using the "handling fee" however, the UPS module just blanket applies it to every single carrier, and the Shipping>Preferences>Handling Fee doesn't apply when I set "Apply handling fee" to yes in the carrier.

Edited August 26, 2015 by JonQCoder (see edit history)