shipping weight table not calculating for google checkout

[franktrades]

i have set up google checkout with website and set up a weight table, when you go to to the regular payment it will display the correct shipping, but if a buyer decides to use google checkout it only displays the handling fee from the table and does not display the calculation from the weight attributes of the items selected,

 

using the table rate

basically if i have a handling fee of 3.00 and with items weight the additional postage is 5.00 which will give a total shipping price of 8.00

regular shipping displays 8.00

but google checkout only displays the 3.00

 

at present the table is set at: 25:3,50:10,100:15,500:50

with handling fee of 3.00

 

i want shipping set the same for worldwide locations but need the weight to be calculated correctly

also i think it may be adding the amounts from weights of each item rather than totaling the weight first then using table format to calculate the extra cost

i have tried numerous ways to try and calculate them but to no avail

everytime i try to check with google checkout it simply adds the handling fee only and does not match the regular payment methods shipping

 

the website is www.franktrades.com

 

any help would be greatly appreciated