I think it's the shine of the glass too, for me anyway.
Expecting it to arrive today, any words of advice or anything to watch out for with the tank and coils? Been a long time since I used stock coils, I will be priming them of course.
I have used the 1.8ohm BVC organic cotton coils before when I first moved back to MTL. I thought they were crap because after half a day I couldn't taste my liquid anymore, on disassembly of the coil, the cotton layer touching the coil looked a bit burnt. No burnt taste, just no flavour.
After a while of doing rebuildables, I've noticed it was my taste as I can DTL on a dripper and taste my liquid for a long time, weeks even. If I MTL a juice, I seem to get vapers tounge for it in a matter of hours.
Wish I could figure out the reasoning behind this. It's the reason I was doing a lot of DTL vaping this past few weeks. I have tried dropping flavour percentage, even down to 2% total, no difference. Played with ratios from 70vg to 50vg too.