Sliding door track repair

A home owner from New Jersey 08902 says:
February 5, 2017
How do I know which topper I need?
Also, if the existing track is really badly damaged, do i need to 'fill it in' or anything before putting the topper on so that there arent spaces between the topper and the rail?

Thanks
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Paul from SWISCO responded:
February 10, 2017
The 80-102 stainless steel track cover is fairly common. Most people file down the rough edges and fill the valleys with epoxy when putting on a new track cover if the damage is particularly bad.
6' Sliding Door Track Cover, Small
6' Sliding Door Track Cover, Small
80-102
$11.30
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