Hey guys! I got an Xhaler a couple months ago 2nd hand and was getting a few problems with it. First of all, its really hard to make the button fire and get a consistent vape. I have noticed that the thing is getting a bit dirty. Where there was previously noalax (sp?) has turned a dark gray color on the threads of where I put the 801/901 connector to the battery/tube as well as the end cap. Also, sometimes it works, sometimes it doesnt fire at all and I get hardly any vapor. Is there a maintainence guide for this to keep it working in prime condition or do these things crap out after a while? Also, should I consider getting the new tube/button? Does it improve these inconsistency issues? Thanks guys!