So, I'm totally new to this and I have a question regarding ohm settings on a new mod I bought. Today I went to my local vape shop and bought a mod. Having been my first time ever vaping, the guy hooked me up with a Prism and the accessories, set it all up for me and walked me through the basics. However, when I got home I realized that my coil says 0.15 ohm but my mod screen is saying 0.16. Is this and issue, and if so, how do I change it? Thanks!