I have suspected for some time now that my wife has been cheating on me. The usual signs: if the phone rings and I answer, the caller hangs up; she goes out with the girls a lot. I try to stay awake to look out for her when she comes home but I usually fall asleep. Anyway last night about midnight I hid in the shed behind the boat with my pistol in hand. When she came home she got out of some one's car buttoning her blouse, then she took her panties out of her purse and slipped them on. It was at that moment crouched behind the boat, that I noticed that my front night sight seemed A LOT dimmer then my rear. Is that something that I need to fix right away or can I bring it into the gun shop the next time I'm in town?