Maybe a long shot, but are you screwing the atty on too tight? It only needs to make contact.
Also, do you get good airflow when you blow through the atty itself?
Are the batteries holding up ok?
Clone atty on Joye battery, if that is your set-up, will produce less vapour. The Joye batteries are regulated down to ~3.2v, the clone atties are made for the full 3,7v. That is very noticeable.
manual or vacuum battery?
I run hot water through mine. Make sure it has a decent flow through, blow it out with water in it, see if its blocked.
put it back on the device, activate it while blowing across the atomizer a couple seconds at a time, maybe 6 times total. drop a couple drops in and check it see if its better.
I wish I could get one to last 2 weeks, but thats me, I vape at 4.5V and up. Your kits pretty mild at 3.2V and an atomizer should be good for a while longer than mine are. But still they are the weak link so they say.
What juices do you use? Vendor, color, VG/PG
Iv removed the fibers that are under the bridge on my joye brand attys and that eased up the draw and helped with the vapor on the one ones that were tight but I have no idea if that would work on your. In fact, Ive never heard of anyone doing that, just something I tried.
That's a pretty bad idea if you still want to use carts on your atty, because the fibers are there for a reason. Wicking the liquid from the cart to the coil, to be precise. Soaking in hot water gets the fibers clean again.
Have had my 510 kit for just over two weeks, didn't realize it but is a knock off. Now getting a very hard draw and very little vapor. I think it might be the atty's but I have cleaned them several times in 91 alcohol and no improvement. Does anyone know what I should try or do I need to replace the atty? I got my eGo today so I am fine but my hubby wants my 510 and I can't get it to work right for him.