Been trying all sorts of different ideas to extend the life of my atomizers and believe i have got it sorted for now 
After 3 days of refilling my penstyle cart i notice that the liquid from the atomizer starts to discolour the filler a dark brown colour and you can hear the liquid inside start to glug as it gets thicker!
This is time to half fill the atomizer with water 4 to 5 times in a row shake vigorously and empty contents.
then you flick the atomizer untill all water is gone(like hitting a drum), you will be suprised how much water she holds!
3 drops, new cart, 10 puffs and hey presto shes like new
Its been working for me so far and would like anyone to try it and give feed back

After 3 days of refilling my penstyle cart i notice that the liquid from the atomizer starts to discolour the filler a dark brown colour and you can hear the liquid inside start to glug as it gets thicker!
This is time to half fill the atomizer with water 4 to 5 times in a row shake vigorously and empty contents.
then you flick the atomizer untill all water is gone(like hitting a drum), you will be suprised how much water she holds!
3 drops, new cart, 10 puffs and hey presto shes like new
Its been working for me so far and would like anyone to try it and give feed back