I believe what happens to the Ruger base pins that bend or break is the owner forgets to turn the lock screw to the lock position after removing the cylinder and then proceeds to load. The base pin not being locked slides back out of battery and the lever preasure then bends or breaks the unsupported shaft. I've had my ROA for years and never had a single problem with anything mechanical.
Dead on and the exact same thing thing can happen with a Rogers & Spencer, ask me how I know.