Jamo What gear is on the bottom of your Distributor, Steel, Bronze, or Iron? Is your cam A roller, flat tappet, Hydro? This makes a differents with the material the cam is made of. Steel gears are used on most cams, Bronze gears should be used on high pressure or volume pumps. Aluminium/ Bronze gear should be used on steel camshafts,roller and harden cams, The gear will wear out and save the camshaft gear from damage. The enplay should have been checked before the timing cover was installed. If wrong the wear on the
oil pump shaft and distributor will happen faster. The hole where the distibutor should be centered on the cam gear also. I have learned this from my own screwups. Trying to save you from the same problem. Rick Lake