Okay so just started dehydrating and I'm addicted, obsessed my wife tells me. I am almost done with my first batch of beef jerky and my question is this: I know you don't want fat in it because that's what makes it go bad, but is it the end of the world? Will it last? I used the round cut that everyone seemed to suggest and cut away all the fat that was on the outside but there are some strips with fat on them. How long will they last? Should I just not expect them to last. Oh and how dry is enough? Thanks