The split washers are more expensive so I bought the non-split version, but now I find the Previous Builder had the studs a little too short in a few places, and I need to pull the retainers and the studs without destroying too much. I'm thinking reach under the internal teeth with a scribe and bend the tooth till it loses it's grrip, rotate, repeat. Angusnofangus, you have a better idea? Anybody?