Not Ranked
Yes Ed, I think you are right on the money.
Rocker geometry is the cause, and so far one has failed, no doubt some of the other 15 will show signs of this.
The OP should remove all rockers and pushrods for further examination.
I spend more time on rocker geometry to get the rocker "strike" correct, and all the clearances necessary, than the short motor assembly on some of my builds.
I agree, and have no doubt that the engine builder of this engine in question has not addressed the valve train correctly.
Gary
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