the luci and the blu are almost identical - i use the blu and i couldnt get any vapor form the thing for the first few days
 
usually the attes just need a bit of use to break it in... also they luci carts dont hold a whole lot of liquid so they dont last long - i recommend buying some 
juice and dripping - it changed my blu completely (about 200% more vapor)
 
so no u dont need to clean the atty - just keep using it for the day or so, and the vapor will increase
 
take slower steady hits so the atomizer can warm up and start to work - and get some good juice to use and refil ur carts with (way cheaper this way too)