I am new to vaping anything other than the disposables.  I just got a Provari with a Kanger Protank.  I am coming down to the end of my first tank full of juice on the Kanger.  I would like to try out anotheer variety of juice that I purchased.  Is it required that I clean out the Kanger before I reload a different juice?  If so how does one clean a Kanger?  Do I just run it under water and dry it off.  If so do I also rinse off the head?  Thanks for any help with regard to this matter.  Stu