Good quality 1.5 roller rockers?

FWIW.... You cannot and should not be looking at the scrub patch width on the valve stem with 273 or stamped rockers like you would for roller rockers. They are 2 different animals. The contact point of the 273 and stamped rockers 'walks' across the valve stem tip in normal use; they are designed to do that. (It reduces the amount of wiping/scrubbing action between the rocker and valve stem for one thing.)

Believe it or not, that actually changes the rocker ratio through the lift cycle, and compensates for the rocker to valve angle changes to some degree... up to some level of lift. (It is actually better than a roller in that particular way.)

You can see from the OP's pix at mid-lift that the rocker is already slightly 'over-center' (i.e., a bit past being perfectly perpendicular to the valve stem axis). Lowering the shaft, or moving it way from the valve without raising the shaft center line, is ideally needed to get the scrub pattern more centered than it is. But both of those require some machining, I think. I personally would not mess with it at this time; there is still a fairly wide contact patch at the far end of the scrub patch, and since the spring pressures are not massive at full open, then I would think the contact pressures are still within reason. (One contact patch DOES seem to be at the limit!)