Well if they refunded money to pay a machine shop to do it, it wouldnt be a big deal. I agree, i shouldnt pay out of pocket and already sent pictures asking how they would like to correct the mistake.
Yeah sending them back is an option, the problem is they are now out of stock and the lady on the phone doesn't know when they will get another shipment. Essentially I'd have to send the heads back, and have "store credit" until a new shipment arrives.