WP_20150914_003.jpgOK sorry if this is already a topic somewhere but i couldn't find it. OK so i use a flashforge creator pro and here recently every time i try to extrude the filament comes out normal for about 6 inches but then it changes into a zig zag pattern. i have tried to clean my extruder nozzle but nothing i do works. do i need to change my nozzle? any suggestions would be great. this ruining everyone of my prints. i included a picture sorry for the quality but you can see what im talking about