Shipping not calculating correctly on multiple line orders

I am using v1.3.9h

I have multiple items linked to a product category. Each item has a different color. The weight of the category is .1

I have set up a Geo Zone Shipping Table as follows:
.1:2.50,.3:3.50,.4:4.50,.5:5.50,.6:6.50,.7:7.50,.8:8.50,1.0:15.50,1.2:16.50,1.4:17.50,1.5:18.50,1.7:19.50,2.0:23.50,2.5:25.50,3.0:27.50,3.5:28.00,4.0:28.50

The idea is that when 8 items are ordered the shipping cost will be $ 8.50 ( 8 x .1 = .8). This works if the quantity only applies to one color, namely one line on the order.

When the order runs to multiple lines (8) and the total quantity of all the lines = 8, the weight is recorded correctly as Items = Quantity 8 and weight = .8 in the shopping cart and shipping estimator but shipping is calculated using a weight of .7 which equates to $ 7.50.

If I delete the 8th line and increase the quantity on line 7 to 2 so that the total quantity still = 8, the shipping calculation is correct: Weight .8 x Quantity 8 = $ 8.50.

Any ideas?

When you say Geo Zone Shipping Table ... what shipping module are you actually using if you look in the Modules ... Shipping ...

Are all of the other shipping modules uninstalled?

When you have 8 items, have you been testing with the same 8th Product each time or have you tried another Product?

Under Modules I only have one shipping module.

I have tried a mix of 12 different products.

If you have the time you can test it by going to:

http://summersoles.ca/html/softsuedeprice.html

While I go fool with some things on your site (might be awhile I have to make dinner) ... can you add to your stylesheet the missing classes for:

.hiddenField {
	display: none;
}

.visibleField {
	display: inline;
}

Could you also tell me the Actual Name of the shipping module and the name next to it like table or zones or whatever ...

That's way above my head - where do I go to do that?

I can't find a name - this is what I have.

I cannot easily read that image ... where did you get the shipping module that is number 10 on the sort order?

NOTE: it would be a good idea on the sort orders that you set them to unique values and not use 0 if you are going to use a sort order on 1 or more of them ...

Not sure where it came from - our Zencart was set up by someone else.

This looks like th eone we are using.

https://wponlinestore.zendesk.com/entries/20610536-multigeozone-multitable-shipping-module

You see where on the Modules ... Shipping ... that there is a name next to the Title of the shipping module:
Flate Rate flat
Free Shipping Options freeoptions
etc. etc.

You will see a name next to the Shipping Module that you are using ... that is the filename of the shipping module ...

If you look in:
/includes/modules/shipping
/includes/languages/english/modules/shipping

and see the files that run these shipping modules, such as:
flat.php
freeshippingoptions.php
etc. etc.

If you could Zip the two files that you are using, based on what is on the server, and attach it to you next post, then perhaps we can see if something is customized to alter how this is working that is causing this issue ...