DS rockers not getting oil...help

The shafts can be on backwards and even upside down. Remove and see if oiling holes are on the BOTTOM, that is correct. and the notch as stated must be down and left looking at the heads. I would pull shafts and run an oil primer while slowly rotating the crank 2 revolutions. The oil hole will line up twice and you should see gurgling oil out the 2nd from left shaft ped. The shaft could also be plugged but improbable. IF no oil, and other is getting oil, you should probe oil galley with coat hanger while turning crank with breaker bar. It should go through bearing into camshaft at one point. if not, cam bearing has moved.