Goodmorning, well I just got my vamo and an agat2 in the mail yesterday. I bought two 18350 battery's and two ncr18650a 3100 mah battery's. Now here is my problem I am set on no2 with stacked 18350 the vamo rocks! With the 18650 not so much, dim screen much less vapor production etc. Has anyone else had this problem? The 650's were not cheap and I hear bad things about stacking. But if stacking is bad how do most laptops get away with it? Any input would be great. Thanks