hi, if you take alook through the pdf link at the top of forum page you can look at all the 928 builds, i take it yours is an s2 or early s4, anyway i dont know much about the 928 myself as i'm a new owner but have had a look and later models have an exra strip that runs down there, look under the body section. the later part is part 92855951900 & 92855952000 i think i should have this on mine a 1989 s4 but not sure if it is as i to also have a gap! anyone with a pic of what it should look like on later cars would be great. i think on mine its had a replacement screen and the strip hasn't been replaced.