A Hint Here:

I have 5 timing covers here from various years all need MAJOR fixing due to customers installing NEW* oil gear sets and not watching for burrs on the drive gear's shaft where the slot was put in, here is a pic of where the burr is....DO NOT FORCE YOUR GEARS INTO THE COVER! This gouges the cover and oil is pumped up through the hole the shaft goes into and starves the WHOLE MOTOR of oil. Be carefull out there guys