The problem is why is the hammer hitting the frame. It could be an oversized hole, a soft hammer, an improperly drilled (formed) hole in the hammer. ETC.. A good smith could diagnose and fix the problem most likely but it should be handled by Taurus. I've not noticed this as a 'normal' problem with Taurus.. Why not give their customer service folks a call and see if they'll handle it under their warrantee. It should be without cost to you..