340......PUTTIN' ON THE ROCKERS QUESTIONS

Hi folks

340 OEM "O" heads. Using a set of OEM 273 banana groove adjustable rockers with hydraulic lifters. 3 Questions......

1) I understand that the FSM specs for torquing the rocker shafts is wrong? What should they be torqued to?

2) Once I get zero lash, how far do I turn my Crane rocker tips with lock-nut to get proper preload?

3) What "total" clearance should I be shooting for between each pair of rockers? I have extra shims if need be.

Thanks FABO