I agree with Mr.P. The location is fixed by the snap rings on the shafts.
Either the head valve location is wrong, or the rocker offset on those two is wrong. I would not run them that way with 0.800" lift. Swap them from another cylinder and find out which is wrong.

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1