I have a DR-7 which I bought in 1971. The guitar was in mint condition unfortunately, it was on my guitar stand and the cats jumped off there tower and knocked the guitar down; it broke the neck. I took it to have it repaired but you can still see the crack. Should I leave it as is or replace the neck? (I'have played the guitar so much, the fretboard now has deeps grooves on it) I'm wondering if it would diminish the value of the guitar..