As I understand it, you can grind a scored shaft once and install
oversized bearings, but that's the limit of grinding, then you need a
replacement.

I believe I"ve seen (sometime in the distant past) cranks offered for
sale, but I may be mistaken. Are they getting hard to find?

As the A-65 is no longer made, what does this mean for the fleet of
A-65 owners? Do they swap it out for an engine that is still
supported? - Mike