273 rocker arm adjustment

I would replace the set screws with these studs and lock nuts so they won't back off as easy...

Also spot face the back of the rocker arm flat so the lock nut has a smooth flat surface to seat on...

https://www.summitracing.com/parts/..._-crane-cams&gclid=CPC0zrX8lNICFYQvgQoduD0N4g