This happened to me too, and maybe my fix will help you, or maybe not. I was very fixated on the quality of my coils for a time, and was making perfect coils and experiencing imperfect results. Then I realized that I was paying too much attention to the coils themselves and not enough attention to their placement. I started really concentrating on building as close to the edges of my RDAs as possible without shorting out, and everything was right with the world again. No more spitting or lost flavor. YMMV