I need an opinion. So currently I'm charging my RX200 batteries and I had to stick my TFV4(w/prebuilt coils) on my old 80w Smok box. I just bought a new coil and haven't had a problem until I was vaping on it and it read as "shorted". I haven't fired it on the older box since then but should the tank be okay to use with the RX200? I'm really just trying to avoid messing anything up, and I think the short was due to the connection being kinda dirty. I'm no expert though and I just wanna know if it's still safe to use the tank on another box, or if I should go out and get another new coil.