Well, since reading the pressure doesn't really tell me a lot about Sanyo #1,
I'm not sure how else to tell what weight charge is needed, except by testing.
If #2 does not do cooling and heating as well as #1 does, we can try adding more R410A.
It might not be easy find the sweet spot.
When testing the repair, I used a short 1/4" test loop with something
around 20-22 oz (or about 1.3 pounds) of R410A, and it worked pretty well.
Later, when another 2 full pounds was added (measured), the system pressures and function seemed the same.
So, it might be hard to say if there is enough refrigerant in there,
without seeing how well it preforms on really cold days.. Or hot days in summer..
It's an easy thing to add a little R410A to a system, but I'd have to get
someone over here with a recovery machine to remove R410A from the unit.
Something that I would like to avoid if at all possible.