I have a variety of 510 devices, and sometimes find that the airflow is so great with some cartos that I can hardly taste the vapor. Does anyone know if there is an adapter or other device for a 510 connection that allows adjustment of airflow to the cartomizer on an existing mod or other device? I have done several searches but found that most people are looking for a way to increase airflow, whereas I want to decrease it. Would appreciate any guidance or tips. Thanks!