shipping rules and google checkout

Hi

I'm using zen Cart 1.3.8a and
google_checkout_module_for_zen_cart_v1-4-7
my domain is:-

http://www.letterboxfriendly.co.uk

In zen cart I am using the Zone Rates shipping

I am using product weight and 3 zones to define shipping costs

Zone 1 is £0 (for the UK and all weights)
Zone 2 is £1.50 for the lightest product going up in £1.50 intervals
every 10 weight units (for the european union)
Zone 3 is £3.00 for the lightest product going up in £3.00 intervals
every 10 weight units (for the all other destinations)

The google checkout module is configuresd and works fine.

I do not undersatnd how to pass these shipping rules onto google
checkout, does the module pick up the rules automatically? my tests
suggest not, or do I need to add some code to the shipping_methods.php
file for it to work?

Many Thanks

Richard

Free bump..

I'm having the exact same problems as Richard. I'm using zone based shipping with weight. Shipping calculation works fine in zencart, but when I try going through google checkout instead, it shows shipping & handling as:

Zones: Zones Rates (£1.00)

The same amount is shown, regardless of total weight, and £1.00 isn't even one of my shipping costs. Are there any answers out there?

I was beginning to think it was just me, does anyone know of any useful documentaion on shipping issues with google checkout and zen cart?