OK, I've mentioned my issues on other threads, but yesterday and today I have more developments...both of my LF Riva batteries are being charged with the 'slow' 510 charger due to sending 2 fast chargers back to LF after two failed batteries from another kit.  I am trying USB from powered hub, and wall plug with both batts.  Both for more than 6-8 hours at a time.  Vapor production is anaemic compared to just a few days ago with the exact same setup and juice.  REALLY frustruated.  After spending $50 on 2 Riva kits (because of the issues with the batts dying in the first one I quickly ordered the second kit to keep my going through the return process at LF).  I have now ordered the EGO PT (another $25) just to have a backup that is not a Riva.  So I should wind up with 4 Riva's and an 1100 mah Ego when all is said and done.  Is there ANYTHING I can do to improve the Riva's while I wait for the new chargers/Ego?  I'm really wanting a cig today because the vape has been so disappointing the past 24 hrs!!! The best I can describe, the Rivas are acting like they're on hour 5 of use when they're fresh off the charger.  I cleaned all my Fluxos and dry-burned, so the seem ok.  Even tried them on old 510 batts, and they were way better, but only last an hour or two.  HELP?!