I discovered a little oil hole in the center of follower that is supposed to squirt oil on the cam surface so I don't see how that could fail on just one lobe and not all 4. I checked all the oil holes in the rocker arm shaft and everything seems to be clear. Maybe you are right, maybe just luck.
When I get the cam followers, I will be good to put it all together and see how it runs. I still need to pull the carbs again. Last time I put gas in it there was gas leaking out of somewhere I haven't discovered yet.