What would make a push rod bend when turning the motor over? I bought a 21 foot ultra with Brodix heads on a 502 and when i took off the valve cover I noticed that I was missing a push rod i went to the auto parts store and picked up another push rod it was a melling push rod 308 and it would not let me start the rocker arm to the threads it was like it was too long. I grabbed another push rod shorter put it in tighten it down as soon as i turned it over i seen the push rod was bend what would cause that please any help???The engine has big brodie heads and is a roller motor with crane cams roller rocker arms...well figured it out the intake pushrods are shorter than the exhaust push rods ......