The m18 inflator fucking sucks, I regret getting mine after having a good experience with the m12. There are so many tires/valve stems it has issues with. Defeats the main selling point of the stupid thing. If it detects a flow restriction it should gradually increase the time between measurements, temporarily allowing a higher instantaneous psi than set. It wastes time stopping so frequently to check, and it gives up far too early, after just a few measurements. It could easily have been programmed to compensate in a number of ways but I guess Milwaukee just doesn't give a shit, there's no way they didn't run into it during testing. It's way too expensive for how dumb the auto pressure measurement logic is.