Hi. Have a 510 and a 902. Get plenty of smoke, but not much flavor. Is that a sign of a bad atty, or of an atty needing a cleaning? Frustrating. Had just got this Jimmy Puffit ejuice from Cignot that I really was digging, but the flavor seems to have vanished. Only about 2 weeks into this ecig thing, but would hope my atty's arent going bad that quickly.