so this is interesting... im currently using a provari mini with a vivi nova 2.5 mini 2.4 ohms at 2.2-2.4 volts. ive had the tank for over a week with no problems, but just recently have been experiencing a very harsh draw and smaller amount of vapor production... i am using the same juice as usual and am in the same volt range, but its producing about half the amount of usual vapor and a massive throat hit! to harsh to handle! what do i do???