Reworking the 273 Adjustable Rockers

The hole on the outside is from the machining of the pushrod oiling hole. What happens is the oil travels around the threads of the adjusting screws and is flung off. The hole is the perfect size for a #8 tap. I tapped it part way then put the adjusting screw back in. Next I screwed a #8 soft screw with red loc tight in against the adjusting screw untill it twisted in two. The screw will be lightly threaded by turning the adjusting screw in and out a time or two.