2 Post Trem Question

[McCreed]

A 6-screw trem is really 2-point, as it should be set up so that it's the two outer screws that it all pivots on. But the two-points have thinner knife edges, so they are a bit more accurate.

Can you elaborate, please?
Presumably if the six holes are drilled in a line accurately, theoretically wouldn't there would be equal contact between the plate and shaft of the screws?

I can't see any local suppliers in Aus that have a cheaper 2 post trem, only 6 hole. Plenty in China though but a month wait.

Have you tried Realtone? I've found their home-brand stuff to be very good quality.
This vibrato is 54mm string spacing, so don't know if it will work for you. $69 HERE