Stoke

I just had my rear window removed on my 1970 Mustang coupe and the chrome trim was very hard to get off. The chrome was not bent but on the lower part of the rear window it appears that there were some plastic tabs that were pressed into the clips attached to the window frame. Several of those plastic tabs were damaged during the removal and I haven't been able to find them anywhere to purchase. Can anyone help me out with some info?