just started in DIY and ive gotta huge array of flavorings and ive been doing some mixing and vaping. im not sure if its me or what, but everything ive mixed is just blah and really weak in taste. im using a standard flavoring percentage of 5% on all my mixes so far just to be consistent. ive even used some flavors that are called "double-strength" and to me they are just as weak tasting as the rest. im not sure what to think about this and I am looking for any suggestions? I am letting my new juices sit for a few days and keep shaking them up consistently too, im not sure when im gonna be wowed by any one of the 25 different flavors ive mixed up....all my flavoring are top name brands from top companies so please advise. thanks !