Here is some good, basic information about how to properly install connecting rods.
Apply the molybdenum base lubricant under the head of the bolt and on the threads.
With the bolts installed hand tight, install the gauge and zero the dial indicator. The stretch gauge must fit into the dimples on each end of the bolt.
Alternating from one side of the rod to the other, tighten the bolts.
Caution: Do not stamp connecting rod numbers on the rods. Instead, etch the numbers on the rods. Stamping will cause distort the roundness.