I recently purchased a Vapor Flask v2.1 with the dna40 and am loving temp protection. I tried nickel builds but I don't like having to be careful around the coils so they don't get damaged from the slightest touch. I have been using titanium wire on all of my builds. I know the reading is not correct when using titanium wire and I am wondering if there is a formula for the temperature difference. I have been running at 330 F and the flavor is outstanding and vapor production is decent. Any help will be appreciated.