I got a 721 that did the same thing some years back now. Did that saftey modadfcation program and a triger job at the same time. All most the best thing I did on that rifle. Triger was asome but now the bolt opened when saftey is on I hated that. Year later brought it back had some other work done on it told them to take that saftey thing back! (we all laughed) from what little I know trigers on a remmy are not hand made there masperduced it is a mistake waiting to happen. The good thing it is made out of metal it is reversable and replaceable it just monney. Find a good smith!