Alignment with ductile-iron rockers?

DrCharles said
Good edit. Yes, by lateral alignment I did mean centered side to side over the valve. For the previous setup I used stock hold-downs and also ground the tabs off. Still looked jury-rigged but didn't show any unusual wear after 1300 street miles.

It looks like I can take .080 off each side of the aluminum hold-downs and that will put the rocker pad squarely over the valve tip. Time to break out the belt sander ;)

I used a stand mounted belt sander but same idea. Summit offers 7/8 shims to really get you dialed in. Because I have to remove mine at the track for maintenance I take a Harbor and etcher and mark ever rocker and hold down so I’m not second guessing myself putting it back together.