u/FrOSty-xx

We bought our P1S as a Christmas present for our son. It has been working great but all of a sudden, it now struggles to feed filament through all 4 of the extruders on the hopper attachment. They all seem to start feeding but then they bog down. I’ve checked all of the filament tubing, the buffer and the hot end assembly and do not see any broken filament pieces. I thought it may have been the AMS internal hub unit so I replaced that but I’m still having the same issue. I’ve been using all Bambu lab PLA basic filament. Any advice would be greatly appreciated.