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On the v1 i removed the silicone fill port. Theres orings to create a seal so it serves no real purpose. V2 looks like it might be the sameI got mine about a week ago and SO FAR I haven't had any problems with it. My top cap does a quarter turn and I have topped up the tnk a couple of times. The only thing I do on filling is create an air hole in the opposite silicone fill port to the one I put the liquid in, don't know if this makes a difference or not. I must be bloody lucky to have one that seems to work!! I am going to wassh and redo the wicking tomorrow so watch this space!View attachment 324123
On the v1 i removed the silicone fill port. Theres orings to create a seal so it serves no real purpose. V2 looks like it might be the same