Is there an efficient way to download large maps for offline use? I'm not worried about space, I have a 256gb card in my tablet with a 400gb card in the way. It just takes so long to figure out where my last map downloaded was, and stretch the new one to download. I'm running gaia on android, so I don't can't see my previous downloaded area. I'm trying to download as much of the state of Nevada as I can. Thanks for any help.