la 360 rocker arm oiling

I need an expert again.
I just replaced the cam and lifters in a la 360. I still have the intake off the engine. I used a drill to prime the oil pump. the drivers side oils so much I had to put the valve cover on that side to keep the oil from overflowing. The passenger side rockers don,t get any oil at all.
Both side lifters get oil,but both side lifters have air in them. It's so much the oil is foaming just priming off of a drill.
I have another la motor torn down in the shop. I looked at the cam bearings that oil the rockers.The cam bearings have two holes at 90 degrees apart with 2 holes in the cam.
The motor I'm putting the cam in on the second bearing from the front had a grove around the whole inside of the bearing. This seems to me it would supply oil constantly.The other motor cam bearings are smooth on the inside and only supply oil when the cam rotates and the holes line up. I think the no 2 front bearing is the wrong type bearing.
Can anyone explain the rocker oiling process and what type cam bearing should I have? A machine shop put the cam bearing in when I built the engine a few years ago. The motor has always had noisy lifters.
Thanks
Big block