Trick flow noob ?s

Depends on how the bushings are setup in the rockers or if your running needle rollers. A full bushed rocker will act like it's own restrictor. Split bushed rockers with a gap in the bush usually don't because of the location of the external lube holes to the pushrod and valve tip.
If I use TD with needle rollers and with pushrod oiling, I just block off the shaft supply altogether.