40 lbs at installed height, 200 lbs at full cam lift. So 160 lb springs.
In order to get the hole that is under the rocker arm to get oil of top of the valve retainer I had to mark and drill the shaft at full valve lift, and it's still boarder line.
You need to correct your geometry. Just looking at the pictures you posted I can see the shafts are too low and too close to the valve. Contact B3 here at FABO and have him hook you up with one of his kits.
As for the oil hole under the retainer...let it go. There is plenty of splash coming off the springs to easily oil the valve stems.
I'd rather have the oil on the springs. The rest will take care of itself. Unless you are using springs with over 250 on the seat.