1960's is old mod uses Belguim v1.00 ( Belgium is now V1.43 ) you have BB's mods installed they use v1.43
and I would say you are missing old historic sounds current you are using are v1.49
same with the next they are old Formula 3.5 files current is v1.1 I think
If they wont delete or disappear deleting the rfmods .......mmmm
I would say if you uninstall all rfmods that have "up to date" Historics, Belgium or Formula 3.5 ........then uninstall the the same content and refresh you may be able to delete the old mods then.
Then install Historics, Belgium and Formula 3.5 and all BBs mods back.
All else fails just rename the entire folder install a fresh lite ..then copy back only the rfmods you want and re-install everything ...takes less time then waiting for a reply from here ..........from me anyways. lool