I personally have never liked the Champ or Walther's decals as much as Microscale or Hearld King, as their film stock is a little bit thicker. And any time you coat old decals with either a liquid film or a gloss spray, you're making them even thicker, so it becomes more of a challenge to hide decal cut lines.
I don't know what road name you are looking for Hokie, but here's my list of current decal supply sources. The most recent I discovered is Tichy and they have quite a variety. I have yet to try them but I am planning on it.
This below is the railroad index page. Click on the road name listing in the long box on the left under "DECALS." Or click on "BY CAR TYPE"...
https://www.tichytraingroup.co...d-name1/Default.aspx
Next, scroll down to the bottom of the page for the decal line...
https://www.protocraft.com/Majors.cfm?ID=1
These folks have updated their websites recently. For the Highball decals, click on the photo of the train item type. There's also a photo link to the Industrial Models O scale decals, which I included below...
https://highballgraphics.com/i...27/industrial-models
The following are mostly HO, but there's a few O scale sets...
http://primemoverdecals.com/decals.html
Still others for consideration...
https://www.ebay.com/str/K4-Su...l?_storecat=16323015
https://www.ebay.com/str/tomsm...?_storecat=823520011
