Quoted from calico1997:Yes, the Release the Titans decal is important and basically okay to use. It is actually one of the most usable ones and also probably the most needed one. Worst ones are the 1X, 2X, 4, 50K, 100K...any of the ones with numbers are pretty bad. It's the black ink on illuminated inserts that is transparent. But maybe you will get a better "batch" than I did.
I've made a few sling repro's for myself using water slide decals. I also had problems getting the black dense enough. What I did was to print the decal complete first....ink jet so be sure it is dry....I then duplicated the decal file and then went in and removed all color and just left the black. Insert the already printed sheet into the feeder and hit print and add another layer of black. I have to admit I was amazed at the alignment. This pretty much solved the transparency issue with the black.