Can I have the old tradeskill window back
 

I had the new one and it's way to big!

Deselect the tradeskill feature within the ThorUI AU.
Delete the thorui folder and allow it to redownload.

Choose another "outside" author's tradeskill mod if you don't like the default and use it.

As stated previously I can't continue to support multiple versions of the same window mod. The tradeskill window and start button window mods are examples.
I originally provided them as other authors works but since they have abandoned them I "tried" to keep them updated. With the ongoing updates done by SOE I don't have the resources to keep them up if I don't use them. (I'm not getting paid here)

I believe other authors have taken over updating some old authors mods and you could theoreticaly use those items with the ThorUI.