Hi. We removed these off of our sliding glass door and are looking for replacements. Also, do you sell the piece that goes over the top of the rail the wheels go on? Do we have even need that if we replace the wheels? I went ahead and ordered 81-004 from you with express shipping as our door is apart right now but would someone be able to
Confirm or clarify for me if I ordered the correct parts? Thank you for your help. Pamela