Just tried some TI#1 24ga I got from Unkamen. Washed with soap, water and a scrubby, then alcohol pad. No black marks. Using an IPV4 (sx330 TC chip) Dual coil 2mm in a goblin. Pulsed at 275F to get ride of any organics from the coiling. No oxides of any colors. Used a very familiar juice (250F, 30joules, 0.095 ohms) and got a funny taste. Cleaned and rebuilt my other goblin with dual claptons (27ga wrapped with 36ga both kanthal, .35ohms, 43 watts) Same juice, same bottle, great taste, what I expected. Cotton bacon for wick for both. Tried em side by side - still funny taste from the TI, You guys have any ideas?