Just want to give everyone a final call on this issue so we all have a reference on this forum. DO NOT ORDER Adapter #1 for the bike. It 100% does not fit. The adapter is too big. Pitbull needs to change its fitment page. My bike is a 2011 but I assume the yoke should be the same for the older model.
The Standard Pin works just fine.
Here's a picture of my bike on the stand.