I like this mod kit however the Marvos X that I received came with two coils and the first one I put in leaked from the beginning. I had juice coming out from the air inlet and took the tank off to find a lot of juice. I had to remove the fasting ring and air inlet to clean it all out. I switched to the second could and so far it hasn't leaked. I then realized there is a pro version that uses a different take that screws onto the battery mod. I feel like this would be less likely to leak or at least easier to clean if it does. Wish I had realized this before ordering the Marvos X.