On the 67' between the stainless steel weather strip "channel" and the actual roofline of the car there was a "foam" like strip left when I removed it from the car. Assuming this foam is a factory piece, what is it called? I'd like to replace it but I can't find it in any cougar catalogs. It's not the rubber weatherstripping that goes between the windows and stainless steel channel, but between the stainless steel channel and the roof itself. Thanks for any suggestions.