So I've been doing the whole DIY E-juice thing for about 4 months now. I've finally come up with a flavor that some friends and I absolutely love. I've been making single 15ml bottles until I came up with this recipe and decided to jump up to a 1500ml batch. I mixed everything up in the exact same ratios and the juice tasts pretty much the same but maybe lacking slightly in flavor. My question is this, do recipes need to be tweaked when making large batches? Does anyone have experience mixing large batches of juice, any issues?