I have a seat base that uses special "trick" pins to hold the Recaro sliders in place. The pins go through the one of the 3-4 holes that are in the typical Recaro slider leg. I only have 3 pins like this and would like to get a fourth. (There is NO threading where the pin enters the base.)

Photo #1:
Pin separated from frame - note the small ball bearing at the end: this is on a spring so it can compress inside the frame and then pop out and sit in a hole a couple of inches in
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Photo #2
Pin "partially" installed through slider into the base (frame). It needs to be pushed in about a half-inch and lined up to be seated properly.
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Photo #3
My finger points to the ‘hole’ in frame where the end of the pin seats
unnamed (2).jpg

Has anybody seen something like this and, better yet, does anybody have one I can get?
Thanks,
Jim