After opening and assembling the GoPiGo2, I noticed that the robot does move straight but always turns right (see the video of the Boxter straight line test below). The battery pack is on top of the canopy and the wheels have rubber bands as recommended by the previous forum posts.
VID_20180430_211811.mpg (1.1 MB)
Then I submitted the response to Boxter but after the adjustments the GoPiGo2 still turns right (see the video of the 2nd Boxter straight line test below).
VID_20180430_211955.mpg (1.2 MB)
I’ve also made a video of the wheels and encoders turning during the straight line test and they clearly show wobbling (see the video below).
VID_20180430_212221.avi (3.0 MB)
Could you please help me to resolve this issue? Thank you very much in advance!