Mine is the same way...so it's either risk tearing up the blind vs. lack-of-privacy -and-sun-erosion......not a good design...only answer I could think of was to apply a dark tape to the lower inside windows (only 2" wide), so that the bottom crack would be blocked....
Susan in VA
2005 Sun Cruiser Fun Finder X-139FK
2000 Jeep Cherokee 4.0L (Winston)
Cadillac Sedan de Ville V8 (Great White Whale)