Ride was jinxed from the start. * Forgot the Singulaire IN POLLEN SEASON * Drove off from work without the two bottles from the fridge. Luckily remembered while a reasonably quick return was possible. Bottles retrieved. All that BEFORE the tire battle. The steed came up lame at about 6.5, but hey, tubeless, so the sealant will take care of it, just gotta put some more air in. Pump, pump, pump, ok all good. At 8.9 the rear is low AGAIN. Yeah, sure enough, same hole is bubbling a lttle bit of sealant. More air, more resting with the hole down (so sealant can fill it). At 10.4, yeah, low again. Ok, so now we see this is not going how we'd like. Narrator: So, OG, when was the last time you checked the sealant or added more? OG: Ummmm... Ok, let's consider our options. Got a tube, could put it in, and deal with the sealant mess, but on DC streets, how long before ANOTHER flat. this time with a holed tube? We're carrying more sealant, with the idea being if you are ever a long long way from the car and need to fill up cuz it all leaked out, you could. But currently not that far from the car ... yet. Plus roadside sealant addition is not in the top 20 of Things Fun To Do On A Bike Ride. Fine then. Put some more air in it, make a beeline for the car and take the loss. Annnnd this time it held enough air to get back without another stop. Though it was prettttty low Not what was planned for a nice day with temps in the mid-70s, some sun (and a LOT of wind from the south). But at least it was outside ...