Google Checkout Shipping Order in drop-down box

[willieWontGo]

Using Zen Cart 1.3.8a.

I use both USPS and UPS shipping (carrier calculated) shipping modules.

All of the information passes to Google Checkout correctly.

When the Google Checkout page displays, the drop-down box is there with the charges for shipping methods that I have chosen.

It displays UPS first in the drop-down list, USPS second.

I want it to display USPS charges first, UPS charges second.

Anyone know how I can change the order?

I did change the sort order for the shipping modules in Admin (USPS first, UPS second), but that does not change the order that gets passed to Google.

Thanks in advance. :)