I also believe that you need to flatten that metal tab in the lower track to get the rollers out. I had to do that to separate the upper and lower track sections when replacing my rollers years ago. I replaced my rollers with delron plastic of the same diameter.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.