case knife, new blades

[1975case]

I HAVE A SPLIT BACK WHITTLER WITH STAG HANDLES, IT READS CASE XX USA WITH ONE DOT UNDER USA THE S IN CASE AND USA ARE THE LIGHTNING DESIGN. THE OTHER SIDE READS V5383 WH SS. IT WAS GIVEN TO ME, BUT SOMEONE HAS SCRATCHED THE BLADES WHILE THEY WERE TRYING TO SHARPEN IT, AND IT REALLY LOOKS ROUGH. DOES ANYONE CHANGE OUT BLADES, OR COULD I SEND IT TO CASE SO THEY COULD REPAIR IT? ADDRESS TO CASE? HOPE I AM NOT A BOTHER TO YOU GUYS, JUST TRYING TO LEARN!!! CHRIS