assembly is correct. I've checked to see if it's too tight, not tight enough. The gurgle is immediate. And eventually juice leaks from the air holes. If I blow it out, the gurgle is less but not gone. So I take it apart, clean it up, try again (each time cleaning all the parts with a q-tip to make sure free of liquid). I've used the coils both ways, primed and not.
I started with 80/20, that worked really well with my last one. Then went to 40/60, now 50/50.