I am using the stepper motors provided as a set from steppers on line. J2 is supplied as a stepper motor and gear box combo.

I put the robot together using the manual and the instructions matched the J2 motor/gearbox combo exactly. A few days later (I was waiting for some correct length set screws) I returned to finally fit J2 but the instructions appear to have changed? e.g the instructions I have said that the motor/encoder leads should be exit at the bottom of the assembly but now say exit to the left. The detailed instructions/ pictures explaining how to remove and re-attach the gearbox look different? either the motor/gearbox or both have changed?? Is it me ???