I too thought about inserting “something springy” into
the power socket split. However, elastic bands have a life of about a year
before they decay, and make a mess. Neoprene rubber might last much longer,
perhaps a slice from some cooking material, like cupcake baking molds or gloves,
Even so, I suspect that the split pin will still
collapse, after a period, and any rubber insert will then just stay crushed
against the stronger force of the steel pin sides. Extraction for cleanup, may
be more trouble than it is worth. Then whatever crumbles inside the CP3 will
In hindsight, maybe a twist lock might have been a
better idea, but every connector has some kind of an unexpected problem.
I wonder if this one is more prevalent in portable setups, with continual
power plug extraction, compared to fixed installations.