I recently purchased a Black Zmax. Love the way it looks. I use a lot of Kanger T2s and the draw is extremely tight. I have cut grooves in the 510 connection and drilled holes on either side of the top cap. Improved slightly but not enough. I also have the S/S version and no problems. I thought maybe it was the thickness of the black coating, but not sure. It works fine with a 510 to eGo adapte, but I don't like the way it looks. Anyone have any thoughts.
