I have a yugo m48 Mauser. when the safety is engaged in either position (safe, operable action. or safe, locked action) and the trigger is pulled, I can feel and hear the sear touching and traveling past the cocking piece and the sear often becomes stuck under the cocking piece rather than the trigger traveling freely as is normal (I don't think the sear should touch anything on safe and I should have a dead trigger). Now at this point, when the sear becomes trapped under the cocking piece, pushing the rear of the bolt straight up with my finger or moving the safety lever at all allows the sear to clear the cocking piece and trigger reset normally. But if it someday decides not to reset, the gun could fire unintentionally when switched from safe to fire. Anyone know what's going on???