JohnnyK
I just finished my 1969 Camaro and was planning on polishing the model with "The Treatment" Model Wax. Will decals stick to the waxed surface?
They will stick, but not as well as an unwaxed finish.
Applying Future over a waxed finish is asking for more trouble. It's essentially an acrylic clear paint.
I would carefully and lightly spot polish the areas the decals are going to remove the wax.
If you did not use acrylic for the paint, you can carefully use a little windex or 409 on a soft cloth to spot degrease too. A little detergent in water will also strip just the wax.
Once the decals have fully dried you can use the same Treatment wax to bring up their luster too.