have been reading so many different ways to clean my 510 atomizer, first off, how often does this need to be done ? I know you can blow thru your atomizer from the threaded end into a paper towel, I tried this and did get some 'gunk' out,, but I read about using a can of compressed air to blow it out ? I also read that this might damage the atomizer? Can the atomizer be cleaned with rubbing alcohol or washed in water ? I also read this might damage it ? thanks for any tips as always