Been using the R3s happily...aside from the leaking. Finally got some R4s, made a few test batches with my new Capella flavors, and it tastes like a**. Thought I was my mixes until I loaded one with one of my go-to all-day liquids. What is the god-aweful, chemically, rubbery, nasty taste that I'm getting? And I did a dry-burn before filling...just in case (and I was surprised to see some vapor off of my dry burn...no primer, huh?). Anyone else getting this? Makes me wonder what RS did differently to prevent the leaking...tastes like I'm vaping a silicone lube mixed with motor oil.