I am sorry for all the people having problems, but my Prusa mjni is finally just workjng and happily printing all the stuff I throw at it. Its been having issues here and there forever. I just figured out that the hotend has not been assembled correctly (heatbreaker to nozzle seal was weak) which became a greater issue when switching to a 0.25mm nozzle. Now after I fixed it, it is just awesome :)
On the P1S its a couple of connectors and two Allen screws (assuming you have a fully assembled hot end to swap in). On the X1C its the same but three connectors. The new P2S is coming with a quick swap nozzle feature which would definitely be worth it if you plan on buying one of their printers.
Love me some quick swaps, I’ll probably be checking one out eventually. I like Prusa’s mozzle design, but they’re flippin expensive for hardened, and torquing the adapter to a standard mozzle has been a certified PITA