I tried out the Heisenblag I made up over a month ago (80VG, 20PG, 1mg nicotine and flavour at 20%) and was disappointed with it (I made a litre of the stuff). I've tried it in a variety of tanks and still not much flavour from it at all. I decided to add 50ml of the flavouring into the pre-made litre and it's now tasting a little better, though I've no idea what the mix is now.
I've got it in 4 tanks now and am now at least able to vape it and taste something but it's nothing like the good old Heisenblag I'm used to. Still got some concentrate left and tbh I can't see me wasting VG etc making more of it so it'll be up at some point in the freebies section (though can't see many would be interested).
Won't be buying from VRU again, unless they hold their hands up and admit they've changed the mixes and are reverting back to the original blends, send a free tester bottle to verify it's the proper blue stuff of yesteryear then maybe, just maybe I'll go back. Probably easier just to find another supplier though.