3-4 weeks is the life span I give to any and all atomizers ...
That's interesting, especially since NJoy (my first e-cig) doesn't even routinely offer atomizers as a spare part.
1) Overheating ... When the atomizer gets beyond *luke warm* let it rest for 5-10 minutes.
2) Keep the juice pumping ... Start to taste anything different then what the juice is supposed to taste like, refill.
I of course disconnect the battery if I notice any really out-of-control overheating, and since I usually carry several complete e-cigs with me at a time, just switch to a different one temporarily.
3) Liquid build up ... When liquid builds up, it sits at the bottom of the pot, so while you think it may be full, its really not getting vaporized. You eventually overwork the atomizer, and the solder joints come unattached ... This is why I encourage people to blow out excess juice from their atomizers every single day ... as well as draining here or there for extended periods of time when they are not using it ...
I will make a habit of that (although I like to keep my e-cig on my night table for those midnight fixes!), but so far I've noticed that the "blow and drain" method doesn't really seem to help for me. Once an atty's gone, it's gone. If there's any way to resurrect them I'm all ears!
4) I NEVER clean my atomizers ... some truly believe it helps ... I don't.
Aside from blowing and draining, you mean?
Lastly ... Its just about trial and error. No doubt, a new esmoker will go through several atomizers from the get go ...
Nice to know I'm not alone...
Some atomizers come with LOTS of priming fluid, others don't ... I normally suggest starting with 3-4 drops on the atomizer from the get go ... if it has an *odd* taste to it ... Blow all the liquid out and start from scratch ... 4 drops, 2-3 puffs ... then add 2 more drops and you are golden!
Thanks for the tip, although I here I must add my success story. I finally got brave enough to actually assemble this monster and drip some JC chocolate-almond decadence onto the atty. Hope I didn't do too much, because let's face it, it's REALLY hard to see down in there all the way! Took a hit, expecting some of the nasty taste that had me discarding 5 new carts from a unit I bought from Heaven Gifts before I knew what was really happening. But no! I am vaping some of the richest, sweetest vape, with excellent throat hit and everything, that I could have wished for. I feel like I'm having dessert before dinner, and frankly, dinner doesn't even interest me at the moment. I LOVE MY PRODIGY! How soon can I order a couple more?

Only challenge will be how to carry it in my waist pouch -- may have to create a holster or something for it...
Don't worry about overcharging batteries ... I have yet to see any negative impact !
Hooah! Thanks for the prompt reply -- so far I am one mega-satisfied customer! I am ready to put all my other models officially on the bench as backups. The Prodigy simply rocks!
~~Cheryl