Because you'd be wasting time and effort fixing a problem you don't have.
If the accuracy is there, shoot it and forget about what it looks like on the inside.
But how do you know its full potential with the flaw? Just imagine the accuracy without the flaw. I supposed if it's good enough for you and you're willing and able to pay and accept it as-is, that's all it matters. However, that is not the case for the OP.