PM me, I have a spare KEY that doesn't have the pinion in it.
The place that makes 'em and I have been on the phone back and forth and the guy I've been talking to finally saw a picture of what we're all doing over here and was kind enough to replace the key portion with the pinion in it. As I ordered two, he sent me two..."with compliments". Shown below on the left is what I had ordered with the pinion in it...It looks like you did too by the looks of where that pinion used to sit. And on the right is my buckle with the correct key inside it.
View attachment 379535
See how that key's belt entry is more narrow? That's what you're looking for. As I said above...PM me and I'll be happy to get yours to looking a little more screen accurate