Kevian,
Brett is right,
The only time I had a problem with decals was when I used the wrong decal paper, it wasn’t ink jet paper even though it said it was. I’ve done all types of decals for models, Stunt, FF, R/C models trains, it works great on all types.
Finding the right clear coat over the decal was more of a problem for me, I would up using clear dope lightly sprayed with 75% thinner and allowed to dry. Then the decals would slide of properly. Once the decal was applied and dry, I sprayed two light coats of highly thinned dope 80/20. Then spray on your final clear coats of dope and the edges of the decal seem to fade away.
Later,
Mikey