Having a devil of a time with a brand new MK4#2. It was made in 1954 and came in the greased burlap wrap. After taking it apart, cleaning and lubrication I took it to my bench rest. 5 shots made a fine group 6" high and 1/2" wide. This is my first Lee. As a "try" I removed the upper handguard, band and metal fitting at muzzle. It shot better a 3x4" 5 shot group. While at home with bedding Mausers and Springfields, I have no idea where to start with this rifle. Suggestions welcome !