Broken rocker arms two weekends in a row

Les Gibson said
Asking if anyone might have any thoughts on what might be causing this.
For consecutive weeks I've broken an exhaust rocker arm. Last week #4 exhaust rocker broke. This past Friday night #5 exhaust rocker broke. These are Harland Sharp rockers installed on Mopar Performance aluminum W5 heads. There's no oiling issue or clearance issues. I am told by the previous owner of my Arrow that these rockers are about 6 years old. Is this a case that they're just wore out and I need a new set or is there another reason. Appreciate any constructive thoughts.

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Adding to above post the exhaust is your issue so that is what I would like to see. Valve length differences between the intake and exhaust is common. Then you have the heavier thicker valve margin that comes into play. On a single shaft system like Mopars this really has to be though out. Sometimes a simple fix is a lash cap on one or the other.