Yup. There's also an order of reassembly. There are right and left rocker arms. That refers to the pushrod dimple offset. Pay attention to how they come off. You'll see they are marked "R" and "L". Make sure they go back correctly.
Also, the rocker shafts have a correct orientation. On the passenger's side, the slot in the end of the shaft goes down and to the rear. The slot in the end of the driver's side shaft goes down and to the front.
Now, IF you have shafts without notches.......I've seen a few that didn't. Just look at the small holes in the bottom of the shaft. When installed correctly, those holes should point down and toward the valve springs.....in other words, down and to the OUTSIDE of the center line of the heads.
Lastly, the rocker shaft bolts torque spec is incorrect almost everywhere you look. It's only 15-17 LB FT. Lots of people go 30 like most books say and break them off.