I use the vv/vw eVic and I recently got an Aspire clearomizer tank that uses either a BDC or BVC. When I got the tank it had a BVC and I used a fruity 30/70 ejuice with 18mg nicotine. I believe I had the eVic set at around 7.0-8.0vv. I had the best vape experience ever. Great clouds of vapor, great flavor, and no burning taste. After three weeks I needed more BVC's and ejuice and asked the store for replacements and received 5 more Aspire coils along with 30/70 fruity ejuice but with 24mg nicotine. When I put the new coil in I had a completely different experience. The taste was harsh, something like a burning taste but more like a gross nicotine taste. Also I wasn't getting large vapor clouds and it was spitting ejuice into my mouth. After researching online I realized I received the BDC coils instead of the BVC coil that came with the Aspire tank. I bought some BVC coils online and have had hit or miss vaping ever since. I have attempted to set both the vv and vw at different settings to no avail. Am I frying the coils? Am I vaping too quickly or too slowly? I am completely baffled how people on YouTube with eVics get large clouds. But mostly the taste is unpleasant. I have to drink water afterwards. Any advanced help is appreciated!