So I have a 72" Huntsman longbow.  The string is gettin old so I measured it to look for a replacement only to discover... It's a 65" string.  It's the string it came with so I have no idea.  Is this normal?  I always thought 3" was the recommended amount so I should have a 69" string.  Could this also explain the bend that the slight/moderate bend the bow has in it even when unstrung?