Really? Did they have BVC coils installed or the sub-par BDC coils.
So many folks had bad things to say about the original BDC coils that I never even bothered to try them. I switched to the BVC coils right out of the box. I've vaped the BVC coils down to 2/3rd's of the coil body exposed above the juice and they still don't gurgle.
Yeah. BVC.