I have been making ejuice for the better part of 8 months now and I can make some pretty damned good 3mg vape juice. But not everyone vapes 3mg juice like me and I'm starting to make juice for other people. I'm a direct to lung vaper.. I'm tryin to make some sweet fruity 9mg 70/30 VG / PG juice for a friend that vapes mouth to lung on an ***Aspire k 4 **setup . Do I need to up the flavor ratios considerably? If so how much would you recommend? Or do I need more enhancers /sweeteners and more steeping time for higher nic mg?