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I mocked up the cam to check endplay and lobe alignment. Endplay with my roller cam button was excessive but worse was the lobe alignment. With the cam pushed back as far as it will go as installed, and a light film of red grease on the rollers, I can see a few of the lifters are directly centered on the lobe but most are off to one side (the inside edge) with many sitting right on the inside edge of the lobe. So any endplay will cause the lifter roller to hang off the edge. Pics attached. I'll give comp a call tomorrow to see about rectifying this.
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