It seems like most of the local b&ms mix it fresh these days. Based on past experiences I just accept that anything I buy, online or local, must steep for a week minimum. I would definitely give your two new flavors the benefit of the doubt and let them sit for awhile. After a week or two you'll know if it was simply that they needed steeping, OR if the vendor just make crappy
juice. Hopefully they actually improve with steeping!
Also, just in case, check your hardware. Could be time to replace a coil or atty or whatever you use.
Since the
shop is close to where you live, I hope it works out for the best! Convenience is bliss.