I also have a mod. I poured some of this 2nd gen Almond Joy in it and when I fire it up it tastes soapy.
I had tried another batch in it and it too tasted soapy. @SessionDrummer suggested the flavors are not playing well with each other and over powering each other.
Could the fact that the juices are a 50/50 blend of VG/PG also be contributing?