My T&D rockers with paired shafts (1 per cyl) for 440-1 heads oiled through the pushrods. But his T&D common shaft (1 per head) for B-1 heads oil from the stock location. Interestingly, they do use ball-ball pushrods.

I think he has close to 800 lbs open on the intake (0.800" lift), and slightly less on the exhaust (0.760" lift). Same springs, cam, heads, etc as his previous 511 and it didn't have problems. I did convince him to order the KB block with the lifter oil galley option for any future pushrod oiling build he might have. He is using the pushrods from the previous engine, but he said he may order new ones during the winter. If he orders pushrods with the oil hole so the rockers adjusters get oil from both, will that cause any issues? But it may put too much oil in the heads.
We will take a close look at the pushrods after a few days of racing before ordering anything.