Hate the nanos, love the T3...ce3...got sick of syringe filling. I plug 2 of the holes with wax and they are very nice. I use a manual x2 900 so I can't speak to the auto. Sorry! My main issue...which I think has already been addressed is the gurgling at 1ml
I also get a flood of juice out of the tank when I fill them. It's like when I unscrew them the pressure is released and all the excess juice in the atty / tube / whatever gets dumped down the tube. It sucks! Mini rant over! LOL