Ok, so I had a ijust2 with a royal hunter rda all was fine it was pre coiled cause I bought off my sister. I just got a tesla 200w with a mutation x v4 and switched the coils from the royal hunter because not sure how to make them yet. It tastes really bad which I don't understand because I was using the royal hunter on the tesla and it was great but now all of a sudden I'm using the mutation with the tesla and chefs crunch ejuice. It just tastes like bad and chefs crunch is supposedly a good juice. So do you guys think the coils are burnt out or does that happen or what? Keeping it set at 50w because I believe the I just2 is 50-100w