10 years ago I purchased a Seiko 5 for my nephew for his 16th birthday. He wears it exclusively, not a collector, and is sentimental about the gift. This last weekend he went to set/wind it and the stem came out. I am not knowledgeable in repair. It is a 7S36-04B0 (movement is 7S36C, 23 jewel). It wasn't a very expensive watch, but a decent one. Is it worth taking it in somewhere (no idea where) or should I just start over with a new one?