Hello I was wondering the very same thing. I am printing out many chess pieces, I can print 10 pawns no problem one at a time. two castles and a prince and princess no problem.......this is the confusing bit. when I first printed the 2 x castles and prince and princess when, I came back to the completed print one of the castles had been knocked over. The castles were to tall to clear the gantry....I have the latest cura update and still the same thing happens. this is not a problem as I can place the pieces so that the gantry does not hit the castles if the spacing is set correct and the sequ