Its not it. Someone else had that issue here in the forum. Let me see if I can find it.
Edit: Okay, found it. Last person had to redo the shifter alignment. I think you might be doing something that's causing it to be slightly off. What are you using for the pin in the shifter alignment?
Edit: Okay, found it. Last person had to redo the shifter alignment. I think you might be doing something that's causing it to be slightly off. What are you using for the pin in the shifter alignment?