When i start a print the nozzle dumps some filaments near the front left hand side next to the metal clip that holds the glass plate in position, it then travels to the right and HITS the metal clip that holds the right hand side of the glass plate. It never used to do this and it had done hundreds of prints no problem. I updated the firmware but it still does it. I am using simplify to slice. i have another ultimaker 2 and using the same simplify it prints ok. I have a work around by having the clip half of the glass but its strange.