I just bought a black herakles, and no matter what I do; it doesn't just spit back, it SHOOTS lots of juice into my mouth and makes me gag. I'm not over priming the wicks or anything. I've tried really hard to make it stop but I can't figure it out for the life of me. No one else seems to have this problem either, my neighbor has one the exact same as mine but its totally tolerable. Please help!