Good to hear you have it fixed. It would still be a good idea to keep some extra parts on hand. The most likely parts on colts to give a problem are the trigger/bolt spring, the cylinder ratchet hand and spring, the trigger itself, and the hammer. I just fixed some ones 1860 a few days ago that was doing the same thing as your gun was.Turned out the trigger sear,the top part of the trigger that mates into the sear on the hammer,,was rounded off just a little bit.All it took was a small amount of stoneing on the trigger and it was as good as new. Very good chance was the same thing that caused yours to fail and the hammer falling into half cock could have been all that caused the damage that you found.If your trigger sear is rounded, you may have only a temporary fix. Sears are not as easy to mess with as it looks,there are certain angles on eaach piece that have to be just right in order to work, or last very long.It is also common on these colt copies to have some parts that are not hardened enough and the trigger is the main one. You can get single parts, or better yet a parts kit and they dont cost a lot of money and you will be very glade you have them on hand if you shoot a lot.