You will need to replace the bolts, perhaps even the rods themselves. You have a service manual with a typo. I had the same one. The proper tightening torque is only 28-32 ft/lbs of torque. You have stretched your rod bolts and they must be replaced. I sheared a couple of mine off until I found that there was a typo. Call 1800-nissan1 and bitch at them for the misprint. Have THEM pay for the replacements.