Hello! I have used this kayfun for quite some time now. recently I have noticed juice build up between my mod and the bottom of the Kayfun. everytime I fill I clean up any mess before I attach it to the mod and when I take the kayfun off to refill I notice that there is liquid. I am thinking it is the screw that the liquid is coming from and I wanted to know if this is normal or is there a fix I can do to prevent this. this started about two weeks ago and I just dont want it to get worse. thank you for your in reading this.