Hi there, i'm out to make my own box mod following a video i found on youtube only i've come up against a problem already. The video in question shows the dude using an Evolv dna30 and i have managed to purchase the Evolv dna40 ! My question is this, how many fuses do i use ? The guy on youtube says to use 4 for the dna30 but only 2 for the dna20, so its kind of left me wondering ? Please help........