Hey Dejay, I'm also planning on putting a DNA 30 in my VTR. I also have a Fogger V4. I have removed the ring on my VTR to fit larger RBAs, but the fogger's airflow adjustment ring doesn't allow for a good fit. Are you using the fogger without the ring, or with the extension on the VTR? If you removed the ring, how are you working around this limitiations?