Maximum Lift Edelbrock performer rpm Heads

My heads have shady dell stage 3 job on it, with proper springs 1.550' and retainers for roller cam, 10º valve locks.
I just not sure about the valve guide cleareance, I'll try to talk with Ryan at shady dell.
Another issue are the rocker arms, they are touching the retainers. I didn't understand, I use crane gold 1.6 and they say this rockers will accept valve springs till 1.565". Have I grind the rockers? Or use shims under the shaft?

Thanks a lot for your reply

Minella