will be receiving vivi nova 2, and have read various things that you can do to improve it . wick , filing down connection . Do you have to file connection on version 2 or was that just for version 1 ? If i have to file down connection how much do i file , file it flush ? Also how do you clean your nova ? and how often ? when switching juices? or just using the same juice ? and is there anything else i need to know that i might have missed ?