Alexander and Stumphges, I am very surprised at the water ingress issues I experienced as well. It is possible that I am misinterpreting the evidence (e.g., condensation could be running down the walls and under gear and puddling in the slight depressions in the floor created by that gear); or there could be pinholes or tears in the floor that I hadn’t detected beyond the three that I had previously patched (including one in the field on this trip). It’s also possible that there simply is a defect in my actual tent. I have a relatively early production model and there may be manufacturing issues that have been resolved. I know that Locus continued to tweak the tent as they sent me some additional velcro attachment points for the poles to install myself on the tent interior maybe 3-6 months after my purchase.
Whatever the reason and despite pretty encouraging experience shaking down the tent in less fraught situations that included freezing rain (the tent continued to seem to breathe even with the door zipped shut and a coating of frozen water on much of the exterior), snow, and hot high-humidity environments where breathing still seemed good and condensation only minimal–all of which gave me good confidence for taking the tent out on an expedition-length trip–in the sustained, back-to-back days of heavy precipitation that we experienced, and despite using the rain beak, keeping wet gear out of the tent or in vapor barriers, careful pitching and site selection, drying the tent interior each day as much as possible, and leaving the door unzipped as far as possible without letting rain/hail/sleet/slush/snow enter the tent directly, managing moisture in the tent was untenable, at least for me.
As I said elsewhere, having the two Nemo Hornets along for my daughters allowed us to happily carry on in exactly the same storm systems and wintry conditions that resulted in multiple helicopter evacuations of other hikers while we were out. (For example, here: https://movingmountains.press/2021/08/20/uht-day-3-into-a-new-reality/)
I have sold the tent to another BPL member and confirmed that they have read all of my posts and understand all of the negative experiences I had. They intend to use the tent as a winter-only tent and I know the tent excels in snow and cold and dry conditions.