Table Shipping Rates By Weight Not Working Correctly

[Twister]

Does anyone know if this feature ever worked correctly?

We sell very small items and ship by U.S. Mail. I'd really like to adjust shipping cost by number of items using ranges of items(1-6 items = $4.35, 7-10 items = $6.35, 11-14 items = $8.35, etc). Since all items are about the same weight I set each item's weight to 1.00 and set the table up like this: 6:4.35,10:6.35,14:8.35, etc. but the rates are not not being calculated correctly - they seem to increase randomly and too soon. Also, as order weight increases, rates not in the table appear. I set the packaging tare weight to zero, double checked the table values in the database amd tried entering item weight with and without decimals. Nothing works!!!

Table calculations by price work fine but I can't use them - without a mod to calculate shipping by quantity of items ordered I need to get the weight calculations to work correctly. The failure of this feature is a show stopper for us.

Any ideas or suggestions? We really need some help on this...
Thanks

[Twister]

My apologies - I found a contribution that allows us to determine shipping charges by number of items ordered on the oscommerce site. I installed and tested it and it works fine. If anyone has a similar need, the contrib is called "shipping_table_count".