273 rocker arm adjustment

The hold down 'saddle' under the rocker hold-down bolt is just a stamped piece so there is little precision there. Just be aware that the gaps may vary a bit, and the shim set between each may be all over the map.

Also, when you remove and rebolt the shaft assemblies, these hold down saddles can shift and so that can throw off the shim sets unless you consistently push each saddle to the left or right each time install it. You may want to mark each one with a left or right arrow and an UP mark, to keep it oriented the same way. In the snugging down process, I'd put the final torque on the center saddle first and work outwards each way.