Not sure about the original thoughts about the design. To my knowledge, the two Sams didn't leave a lot of written dialog. The spring itself has the notch that holds the reloading lever in place. Deepening it slightly will sometimes make a big difference. "R.I.P." Ford was the quartermaster of the 1st Volunteer Texas Mounted Rifles, who preferred to be called "The Texas Rangers" during the Mexican-American War. He recorded that 180 Walkers were issued to the Rangers, not the 500 usually quoted, since only 1,000 were made for the government contract to arm the U.S. Regiment of Mounted Rifles, the regiment who Sam Walker served with. It was his former service in the Texas Rangers that confuses the whole Walker Colt story. Ford never recorded any problem with the lever though he did record the burst cylinder problem...which he attributed to the unfamiliarity of the troopers with the elongated bullet that was cast from the ball/bullet mold issued with the guns. Ole RIP decided the guys were loading the bullet in backwards and causing the gun failures. Close examination of some originals has led modern collectors to conclude that when Eli Whitney was buying steel for the guns he made(for Colt for the Army, sub-sub contract)Eli took some shortcuts in the metal quality department. Oops!