I just picked up a Gossen Luna Pro off of eBay today and while it does work, it has some problems. The needle will go up with light, but in darker areas it will not go back down without some prodding. Does anybody know of somewhere I can send this in to get repaired/CLA? Affordable would be nice since I'm on a medical disability and I don't have a lot of money to spend (the meter was a good deal and didn't cost much. I guess I know why....).