I understand the sentimental value, but if you have to pay someone to get the repair done, you will be paying well in excess of the camera's monetary value. I suspect that you will be looking at something in the ballpark of $100. I will let someone else chime in about a good repair person, I am not sure, but I do think it might be a good idea to see if you can find a parts camera on eBay. I doubt that there is a supplier for those parts any more.
Good luck!