I've got a 1983 240D sedan with electric sunroof. I've cleaned/lubed slides and cable. Sunroof goes all the way back without cable attached (by hand) but only 2/3rds back with cable attached. Could someone have put in a wagon cable? Are there different lengths between sedan and wagon cables? The reason I ask is that there's a wagon fuel sender in the tank so maybe PO had an old wagon and used parts for this sedan. Or is there something else stopping the travel?