Hello i just bought the EHpro Squape R clone and it's grate, no leaks, seems easy to rebuild. But i get this metalic taste that i can't get rid of. I use a torch to burn the kantal before making the coil, still get metalic taste, then i thought if it could be some kind of industrial residue, so i just have damp all the metal pieces into vodka... so i could clean them up. Any thoughts?