UPDATE to my adventures with the Nautilus. Seems that two full tanks through this have fixed all issues. Maybe it required a "break in" period? I dunno. At approximately 3ml of liquid in the tank, I put it on an iTazte SVD. Again all issues fixed. Maybe it wasn't happy on the Vamo V5, or the iTazte VTR, and simply wanted to be mounted to something different? I dunno. The SVD is using an Efest 18350 battery, vs the V5 and VTR using an Efest 18650 battery. Was this the reason for the different experience? I dunno. I changed my vape style to give a small little blow right before taking a drag, and never noticed any more gurgles. Maybe it needed that to regulate the pressure for the proper vacuum? I dunno.
Now, since I rinse all my tanks after two fills, I'm going to change the head, while the first one dries out after rinsing, and drop another flavor in. Will this cause my issues to start all over again? I dunno. Hopefully it doesn't, cause when the Nautilus works right, it works really really well. However, when the Nautilus doesn't work right, it really really doesn't work right. Doesn't seem to have an in between to it.
On a side note, I have tested on each airhole setting, and can report all is good. Again... why? I dunno.
I wish I could tell you what exactly it was that made my experience do a 180, but alas... I dunno. What I do know is, I have posted all the info I have concerning what I have done to get it working super duper all spiffy and stuff. Hope it may help some of you out.