I recently bought a new 12 gauge synthetic 870 shotgun. First shot on quail covey rise, I could not eject the shell. Action bar lock was stuck. With two hand effort, I ejected the shell and then ejected all other shells. Shot and ejected several shells with no problems. Next day ,oiled it and shot 25 times at skeet with about 5 or 6 jams. Anyone have any ideas on the problem. Sportsman's Warehouse said they would send it back to Remington, but I need it for South Dakota next week. The gun is fun to shot, but I need to fix the jamming problem. Maybe it needs to be broken down and cleaned real well.