I have too many random tips to list

So I will pick the most random. Last time I had wicking problems with the EVOD I had left it sitting on the window sill when it was 30 degrees outside. Juice had become very ummm... 'non-flowy' hehe.
Seriously though, I suggest that when you try it again, take very short pulls like 1-2 second only. with good 10 second or longer gaps in between. If you are still getting burnt hits after doing this a few times, you need to replace (or at the very least remove and clean) your wick. Even the thickest juice wouldn't be too slow under those conditions, so youve eliminated that possibility, and that burnt flavor might have settled into the coil/wick assembly.
Also with the Evod, and really any other clearomizer, I find that filling it too full or too little makes the device very sensitive to positioning. Until you find a solution try to stay between 1/3 and 2/3 full, again to keep it from being finicky at the extreme ends on either side + or -.
dat my 2c... I have more cents if you need it..., lol