Just a thought

[aseeryl]

There's a lot written about cleaning attys, but I noticed it was getting difficult to draw on a 901. I took the mouthpiece apart -3 parts - and cleaned out some gunky mush from the air channels. Result - like new.

 

[doots]

Yeah. That happens from time to time with these.

 

[JerseyGirl]

I have the same problem. Soaking my cartridges in very hot water once a week helps.

You can tell where the problem is by blowing through the atomizer without the cartridge attached - if the draw is a lot easier without the cartridge, than you've probably got a clogged cartridge.