If I have this figured out right, the gear shift is on the right in the photos, correct?
If so, your gear shift looks ok, but there is something seriously wrong with the throttle cable. The bend shown in the upper right photo is much too severe, and the cable will certainly fail at the bend eventually. The bottom photos look fine. Is there something hanging up so that the throttle arm is hitting the gear arm? The arrangement in the top photos sure does look odd.