i've got the smokestik platinum (im guessing a 4081). anyways, it's acting funny. sometimes it will vape and sometimes not. both batteries are charged. last night it wouldn't do anything with one batt and bearly with the other. this morning nothing with either. then i blew out the atomizer and got alot of juice out of it. then it smoked one puff and wouldn't do anything. i blew it out again and nothing came out. so i slid the cart back on, and holding my hand to the end to see if the light lit up, i puffed and it worked. then the next puff it didn't. it seems to work better when i hold my hand close to the light up tip for some reason. anyways, any ideas on what's going on? im new to this as this is my 2nd day with this pv and i may be doing something wrong, or is there something wrong with the pv?