I stripped out the extractor star on my 686 SSR awhile ago, over tightened it during reassembly. I just received and installed the following new OEM parts today: extractor star, extractor spring and extractor rod. All the parts fit fine and I was able to reassemble and install the cylinder assembly in the gun. The problem is that the hammer will only drop on one chamber. The action can be cycled with the hammer or trigger, but on all but one chamber the hammer travel stops just short of allowing the hammer to drop. I'm not familiar enough with the inner workings of the revolver to troubleshoot it any further. Any ideas? Home fix possible, or am I headed for the gunsmith?