Anyone else having issues with the Ultimo tank by Joyetech? Mine leaks a half a tank or more and spits juice every draw. O rings are all there, and im only filling it halfway. I let it sit for an hour or so, and juice is all over the mod and table. No juice flow control, so not sure what is causing this. Instructions are a little vague. Had high hopes for a replacement for my V1 Herks and Crowns, but this does not seem to be it..