So today I was vaping my demon energy from MBV and using a vision spinner and pro tank 2 and I started getting some very tight draws, and so I switched out the head to one I had cleaned and I got some burnt taste and it was a 2.5Ohm and I wasn't overpowering it according to charts I've seen. So I switched that out for a brand new 1.8Ohm head and I'm still getting the slight burnt taste as I exhale thru the nose, and I'm not going above 3.8v. should I dump the juice out and refill it and see if that might help?