Failed print with one roll and not another

[Bruce19]

ok so heres the latest I wrote to overture and they replied back asking for pictures and batch numbers. I sent them that information this am. They said if they see its their filament problem they would send new rolls. In meantime I have a sample of white PLA came with my printer. Never opened. I printed the BB8 and it too shifted not the 15mm as past prints but only 8mm. Thats an improvement. The Y axis is much longer than original. I dont see any slop from only having one Z stepper motor. but i could be wrong I just wrote to the Ender Extender people asking what could be. Im going back and forth about dual Z stepper setup kit. ANY IDEAS?