I just had my engine rebuilt and after approx 150 miles my adjusting screws on the right side of my engine come loose. I have already broke 3 push rods on that side and the knocking it produces sucks also. So do I need new adjusting screws? Or do I need new rocker arms? Also, every time I pull the valve cover off on the right side it is real gummy and black, and the push rods look dry. On the other hand The left side looks great. The oil looks great, everything is lubed up and adjusting screws never come loose. So whats going on on the left side?

Maybelle lee