Ok, this is a little weird as I started building the same two cars a couple of months ago. I got both painted and I was up to decals, I used the Slixx decals on the Blue Max, but only had the kit decals for the Billy Meyer car. I had three sets of kit decals and all were bad and unusable. You stated you used Slixx on both cars, did you use the Glidden TBird decals?
Both of your builds are beautiful, very well done!