The holes in the shaft are supposed to point down. Getting a big squirt of oil from those spit holes hitting the valve cover will make for low oil pressure in the bottom end, and lots of leaks from flooding the valve cover gasket. There are times when "more" is definitely not "better". A tiny trickle of oil from the spit holes is all that's needed, particularly at idle speed. Some people fancy themselves to be smarter than the engineers who designed that system almost a hundred years, and several million engines ago.
Jerry