Have a 1968 400 YE, 2 BBL Carb. Plan on installing a 4 BBL manifold. Performed an external oil pressure test, 20 lb's at idol, 43'slb at 1500 RPM. Compression test was 175 lb's all cylinders. Problem is excessive rocker arm noise. What would be the easiest way to stop this excessive noise? Adjustable roller rockers or ????? Thanks
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