[ERA Chas]

Hsss,
I noticed in your photo that you have what look like Dove un-bushed rockers as well as spring type spacers between rockers.
Both are less than desirable. Hope George gets on here with his expert preferences.
I too have stage II Shelby heads, but the rest of the combo is Harland Sharp rockers [with bushing] FPP mr stands and end stands, FPP solid spacers and FPP hardened shafts.
Been bullet proof to 7000 for five years.