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or-- you could of over tightened a nut that had a flaw!!!!
Mike----the locks are forced thru the retainers by aone or a combination of several factors--soft retainers or locks, coil bind, and possibly just by the pressure of the spring being held by the locks just push thru---Manleu and possibly other companies have and sell a lock/lash cap set up where the cam / rocker pressure pushes on the locks/retainers instead of wholly on the valve tip--- I referred to this system some months ago when someone else was having a problem such as this
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