Ajax with Repeat Selection

Ok, I have several issues with this problem so I am breaking it down piece by piece. Maybe one will resolve the rest. I will attach the files to this post.

A quick description of what I am doing. There are three dropdown lists that hold values to be converted from metric to standard measurments. There are three textfields that hold the results of the calculations that the ajax code performs before displaying the reults. Each dropdown corresponds to a specific textfield.

First I built the basic page with just the necessay coding to make sure the ajax was working (Start.php). Using the DataAssist Insert Single Record I could get everything to work and upload perfectly.

The first problem I have which is what I am addressing now is that when I applied the DataAssist Repeat Selection to the page the first row works like it is suppose to, but the other rows will not. Second if you try to make a selection from one of the drop downs in say row 2-15 then it returns the data to the textfield in row one and not the row that was used. You can see the code with the attachment Step1.php.

I have also attached what I thought th final code should have been (Finished.php). This might help somehow.