I have a Joye 510 manual and have had it about two weeks now. The last few days every time I use it the atomizer heats up and gets hot. I have tried making sure there is enough juice in it, making sure the fiber filling in the cartridge is placed properly in it and have cleaned (outer only) the atomizer and inside area in the batter. I am using a juice mix of 50/50. Can anyone tell me what may be causing this?