Mirrored bifold doors

A quick learner from Pensacola, FL 32507 says:
Hello,

I'm trying to identify the parts I need for my mirrored bifold doors. I ordered what I thought were the right parts from your firm (item shown on the right in the photo), but it doesn't appear to be the right thing. My part is on the left; your part is shorter than mine and has some plastic attached at one end that mine doesn't.

Hope you can help.
Thumbnail of the uploaded file named IMG_1221.jpg
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Paul from SWISCO responded:

I noticed you previously purchased the 21-022 bifold door guide pin. However, to me, it looks more like our 21-007 would have been a better option. Take a look and see if you agree. 

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