I read on an other thread that the vaporking cartridges fit the 901 batteries batteries perfectly....but because there are no holes on 901 batteries (since they are on the atomizer) there is no airflow. Has anyone tried making notches on the VK cartridges to see if they will work on 901 batteries. If any one has vaporking and a 901 batteries can you please try it out and report to the forum. thanks in advance.