Don't beat yourself up too much. From what I've read and experienced through applications , the latest Monokote and Ultracote have their problems ,too. Monokote bubbles -like never before with heat application. Other than white and light yellow , Ultacote looks great until you have a model out in the sun ( don't we all when flying them ? ) - then the bubbles and blisters appear.

There is talk that the adhesives were reformulated to meet even stricter EPA requirements. The old stuff from both was much , much better. And BTW , both distributors deny any changes.