I am having same problem as PhilipFlip. Filament will not load on P1S AMS. Filament goes as far as the y hub. I have checked for clear passages and there is no blockages from filament. Given that I suspect an issue with a sensor or hub. It fails loading filament despite no blockages. I have watched all the videos and am at an impasse. Would appreciate any suggestions. For now I will just try not using the AMS.