Help! International Zone Rates Shipping Doesn't work for me?

I am using Zencart 1.3.7.1

I have tried everything to get international checkout to work. I am using Zone Rates. The local shipping within the US works this way but I cant get the international shipping to work no matter what I try. I posted the settings below.

Zone Based Rates
Enable Zones Method
True

Calculation Method
Weight

Tax Class
--none--

Tax Basis
Shipping

Sort Order
0

Skip Countries, use a comma separated list of the two character ISO country codes

Zone 1 Countries
US

Zone 1 Shipping Table
300:0.00

Zone 1 Handling Fee
0

Zone 2 Countries
CA

Zone 2 Shipping Table
3:8.50,7:10.50,99:20.00

Zone 2 Handling Fee
0

Zone 3 Countries
00

Zone 3 Shipping Table
100:38.50,200:58.00,1000:58.00

Zone 3 Handling Fee
0

Do I need to have any kind of zone definitions setup to have this shipping type work?

I think the store owner had hired someone a long time ago to do some work on the checkout. If I need to reset the checkout back to original, what files do I edit.

The site is westgreentraders.com if you guys want to check it out.

Save these settings, then go to the Modules ... Shipping ... and do a REMOVE ... INSTALL and reconfigure of the Zone Rate zones shipping module ...

On the Product that you are testing, what is the weight of it?

What are your settings in the Configuration ... Shipping/Packaging ...