Hello I have a 289 in a 66 coupe and the previous owners built the motor and I think did a few things wrong. First the bolt to the fuel pump eccentric came loose and the little tit of the eccentric that went into the cam broke off. Also I believe that this is a 2 piece eccentric and they only installed the one piece. I did not know better at the time and bought a new and replaced it as it was and have the second piece on shelf. What will happen with not having both pieces on there. I seem to loose fuel pressure from time to time. I am not sure what is right and wrong in this department. Any help is greatly appreciated.