I have a mint shape Colt Trooper Mk III in .357. The cylinder release is still however with some gentle manipulation it has allowed the cylinder to release. Now when the trigger is pressed, the cylinder rotates perfectly however the hammer does not #### in double action mode. Any recommendations ? I have used other smiths in the past and damage to firearms finish has resulted. Looking for someone who can fix this revolver while keeping it's finish immaculate as possible. Ben