I had a 1946 truck with many bent push rods in a six cylinder motor. The engine ran on five and six cylinders until I fixed the problem. I straightened all the push rods and reassembled as needed. Each rocker arm is adjusted by itself no need for pairs or the like.
I believe the reason for the bent push rods was due to too many hight RPM's
My engine runs smooth and sweet. These old engines were nothing like the hight tech we see in todays motors.
