Having some trouble with the trigger on an older CVA Optima Pro, pre 2010, that I'm hoping maybe someone can help with. The trigger assembly is actually new/old stock, it's fired less than 20 shots. Was working fine then suddenly the firing pin stopped engaging. If I pull the trigger real hard the firing pin will engage, but when I pull the trigger normal, nothing. Firing pin is clean, that was the first thing I checked. Under the hammer I see a piece of metal that should engage the firing pin when the hammer drops. Instead that piece appears to be dropping below the firing pin. So I'm assuming I need to take the assembly apart but once I'm in there I'm wondering what to look for to fix this? Hopefully this isn't entirely confusing and I appreciate any help!