I don't know if this is the correct way, but after I clean out my atty's (by soaking them in everclear), I blow them out and put several drops of PG in them and shake out the access. I started vaping in Oct 2010 and I have only had 2 atty's die on me. Nothing lasts for ever, but I feel that if you take care of your devices, do regular preventive maintenance, and don't push them past their limits, they will last longer and preform better. I try to use only 80 PG/20 VG mix, stay away from dark colored juices, and super sweet juices. When I notice that my flavor and vapor is changing, it's time to clean them. I'm not an expert, but this is what works for me.
Sounds like the perfect method!