My Pietta will no longer cock. The hammer will not stay back when cocked most of the time. Sometimes it works, most of the time it don't. When it does stay back, the trigger is now a hair trigger. I have burned myself twice because the pistol has fired before I was ready. Any ideas short of a $$ gunsmith? This very fun, and very accurate pistol cost me $100. a few years ago. It is/was as accurate as my 686 smith at 25 yards.