I think the problem is the batteries, not the actual atomizer..I have had this problem with my 901 -- I bought 5 batteries to start with, of those 5, three are the hard draw make my jaw sore but they CAN be used in a pinch sort...and of course they have a weaker vapor/throat hit as well (although I use (homemade) menthol exclusively, and menthol = throat hit) The other two are good, and "almost" like my passthrough... My passthrough is wonderful, good steady vaping experience, every time.
So I'd recommend a passthrough, but you have to be careful with THOSE too...because they're made very cheaply, and the wires break easily. After a lot of research here, I discovered I should have reinforced the cord (Gorilla Superglue where the cord meets the passthrough, and taped the cord to the battery to prevent excess wiggling of said cord at battery connection...) and that worked WONDERFULLY on my new passthrough -- right up until I inadvertantly flooded the passthrough. One DEAD passthrough at that point.../sigh
So I'd second the "mod" idea -- I've researched them, and for me the Prodigy seems like it will be the most appropriate, and it's getting some VERY good reviews. Of course, there IS a backlog on orders -- he has all the units, but he's filling orders for 500+ sold all at once, so the newest guesstimate from their customer service is 7-14 days before shipping if you order NOW. Still worthwhile IMO.
Puresmoker also has an american made passthrough which is getting rave reviews for sturdiness and performance, but again, he's filling a LOT of preorders right now so the days to shipping turnaround isn't going to be instant.
Of course, I'm sure other mods would be wonderful too, it just seemed the Prodigy had more of what I need so that's the way I'm going, you may wish to research and find what YOU need. Maybe make a list of what YOU need in a vaping experience and go down a checklist as you research them. (ie, sturdiness, button placement, warranty, availability, etc etc etc)
Good luck with your search, I'm sure the RIGHT method is out there for you!
~Yira