I own a Franchi 620 20ga. gas operated shotgun, an autoloader of coarse. It will not eject 21/2 dram eq. shells. The gas regulator has two positions. One for light loads and one for heavy loads. Even in the light position, it will not throw the spent shell clear of the bolt upon firing. I tried some 3dram eq. shells with a light charge of 3/4 ounce shot. This is federals high velocity round. It shoots them fine. Has anyone else ever had this problem and fixed it or will I have to live with only shooting heavy loads in this gun?? Since most 20 shells have the 2.5 charge, it is burdensome in trying to find shells the gun likes. Is it because it is new and needs break in time???