FYI, I just realized one of my 2 Pulse 80w boxes has an issue with the 510. It will not make contact with my Athena, Recurve or Dead Rabbit SQ RDAs. All 3 RDA work fine on the black carbon version but not the red lava version for some reason. I just sent an email to the vendor to see if they will swap it out for me or if I am going to have to deal with VV warranty. Only good news in this story is that both the vendor and VV warranty are located in the same town about 20 miles from me.
I would definitely contact Vandy Vape on that as well. Just to let em know at least. I do know when I try and use something high in resistance, that accuracy is off slightly. Something 0.83 would be like 0.87 on there (no temp change).
Thanks for the great review.