Hello all. I just started the diy thing a week ago, so far, ive made 3 10 ml flavors, 1 30ml flavor and a 30 ml mix with no flavor. I must say, geeze are my arms tired! At first i just shook up the 10 mls real good and wore me out lol. But im making 80 vg 20pg batches so their pretty thick, but i noticed when i tried a couple flavors in my dripper, one hit id get orange, the next hit id get cream. Anyway, it just seems like their not truly mixed, is there any "easier" way to mix these things up? I was kinda thinkin, it sure would be nice to have something similar to one of those paint shakers like they have at hardware stores and such lol. Well, thanks for any suggestions.