I use my 510 daily and decided to get a 201 with a passthrough for the time I'm attached to my computer. I also got a PT for my wife's 402 and it works great! However the 201 has me completely frustrated. I can't get anything out of it with either of the attys I got with it. One of them the draw is super light, no resistance, and get any vapor. Like zero. I it sounds like it should be working but no vapor. The other atty has a slightly stronger draw but weaker than my 510 and only produces enough vapor to make me hyperventilate on the damn thing thinking its coming around. I think it may be the PT but I don't have a 201 battery to use for a comparison (dumbass me). When I blow on the business end of the batter without an atty I get inconsistent results as far as it turning on. The 402 PT is sensitive and consistent. I have to blow on it pretty hard and close to get the 201 to glow, even dimly. Anyone have any tips or tricks I could try to isolate or solve the problem? 
