I have an order in my shopping card for making 5pcs of a PCB and assembling it. There is a selection of assembling either all 5, or  2 of the PCBs. Now, when I edit my order from the shopping cart, I can still change some things in the order, like the number of PCBs ordered from 5 to 10 and back. But I can not change QTY of PCBs to assembled from 5 to 2, the options is shown, but blocked / grayed out. Can you fix that? Going through the whole alternate-component selection (almost every single one) for my PCB, again, to make a new order and delete the old one, would be quite a waste of time.