I get my experience from the wonderful world of motorsports where shock spring bearings are the subject of much discussion as they degrade rapidly since they're exposed to the environment but considered a must have for those who know.
I've seen many springs "walk" themselves around a damper body and then unscrew the retainers or preload collars as they continue to spin.
I think in the world of airsoft where the bearings are going to be sealed away and the spring is subject to a very rapid and constant cycle they sure appear to me to be a good idea.
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